diff --git a/Easydict.xcodeproj/project.pbxproj b/Easydict.xcodeproj/project.pbxproj
index 35f1a932d..c56ec8c9b 100644
--- a/Easydict.xcodeproj/project.pbxproj
+++ b/Easydict.xcodeproj/project.pbxproj
@@ -513,6 +513,7 @@
 		A1C1A10130ABCDEF00112233 /* ClaudeSSEParserTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = A1C1A10030ABCDEF00112233 /* ClaudeSSEParserTests.swift */; };
 		A1C1A10430ABCDEF00112233 /* ClaudeSSEParser.swift in Sources */ = {isa = PBXBuildFile; fileRef = A1C1A10330ABCDEF00112233 /* ClaudeSSEParser.swift */; };
 		A1D1807B2F8D100100B1C0D1 /* ThrottleGate.swift in Sources */ = {isa = PBXBuildFile; fileRef = A1D1807A2F8D100100B1C0D1 /* ThrottleGate.swift */; };
+		A1D1807F2F8D100100B1C0D1 /* NetworkSession.swift in Sources */ = {isa = PBXBuildFile; fileRef = A1D1807F2F8D000100B1C0D1 /* NetworkSession.swift */; };
 		A1D1807E2F8D100100B1C0D1 /* ThrottleGateTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = A1D1807D2F8D100100B1C0D1 /* ThrottleGateTests.swift */; };
 		A2016EDA90ED45B5B66FA986 /* AnalyticsService.swift in Sources */ = {isa = PBXBuildFile; fileRef = 14921B68C1D645268F93668E /* AnalyticsService.swift */; };
 		A94F9CB9D704426DB91B25D3 /* DeviceSystemInfo.swift in Sources */ = {isa = PBXBuildFile; fileRef = E54300FF4F544CC2A180FE53 /* DeviceSystemInfo.swift */; };
@@ -1197,6 +1198,7 @@
 		A1C1A10030ABCDEF00112233 /* ClaudeSSEParserTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ClaudeSSEParserTests.swift; sourceTree = "<group>"; };
 		A1C1A10330ABCDEF00112233 /* ClaudeSSEParser.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ClaudeSSEParser.swift; sourceTree = "<group>"; };
 		A1D1807A2F8D100100B1C0D1 /* ThrottleGate.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ThrottleGate.swift; sourceTree = "<group>"; };
+		A1D1807F2F8D000100B1C0D1 /* NetworkSession.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NetworkSession.swift; sourceTree = "<group>"; };
 		A1D1807D2F8D100100B1C0D1 /* ThrottleGateTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ThrottleGateTests.swift; sourceTree = "<group>"; };
 		A230E9A2358C7FBC7FB26189 /* Pods-EasydictTests.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-EasydictTests.debug.xcconfig"; path = "Target Support Files/Pods-EasydictTests/Pods-EasydictTests.debug.xcconfig"; sourceTree = "<group>"; };
 		A6C26D557A3746598059449DAD170FE1 /* OrderedDictionary+Variadic.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = "OrderedDictionary+Variadic.m"; sourceTree = "<group>"; };
@@ -3436,6 +3438,7 @@
 				EA9943E62B534D7C00EE7B97 /* Extensions */,
 				03538DF12D25AAD1005E56A8 /* CookieManager.swift */,
 				A1D1807A2F8D100100B1C0D1 /* ThrottleGate.swift */,
+				A1D1807F2F8D000100B1C0D1 /* NetworkSession.swift */,
 				03A3E1542BEBDB2000E7E210 /* Throttler.swift */,
 			);
 			path = Utility;
@@ -3996,6 +3999,7 @@
 				039CBE872D9AFBF3009A04DC /* ChineseGenreAnalyzer.swift in Sources */,
 				03BDA7C12A26DA280079D04F /* XPMArgumentParser.m in Sources */,
 				A1D1807B2F8D100100B1C0D1 /* ThrottleGate.swift in Sources */,
+				A1D1807F2F8D100100B1C0D1 /* NetworkSession.swift in Sources */,
 				03A3E1552BEBDB2000E7E210 /* Throttler.swift in Sources */,
 				03D9D6FF2D8C186F009E0CEC /* NSScreen+Extention.swift in Sources */,
 				03991166292A8A4400E1B06D /* EZTitleBarMoveView.m in Sources */,
diff --git a/Easydict/App/Localizable.xcstrings b/Easydict/App/Localizable.xcstrings
index 6e351dd28..76d2f81ea 100644
--- a/Easydict/App/Localizable.xcstrings
+++ b/Easydict/App/Localizable.xcstrings
@@ -7175,6 +7175,118 @@
         }
       }
     },
+    "setting.advance.header.local_proxy" : {
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Local Proxy"
+          }
+        },
+        "sk" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Lokálny proxy"
+          }
+        },
+        "zh-Hans" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "本地代理"
+          }
+        },
+        "zh-Hant" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "本地代理"
+          }
+        }
+      }
+    },
+    "setting.advance.http_proxy_url" : {
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "HTTP Proxy URL"
+          }
+        },
+        "sk" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "HTTP Proxy URL"
+          }
+        },
+        "zh-Hans" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "HTTP 代理地址"
+          }
+        },
+        "zh-Hant" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "HTTP 代理地址"
+          }
+        }
+      }
+    },
+    "setting.advance.http_proxy_url_desc" : {
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Supports http:// and socks5:// schemes"
+          }
+        },
+        "sk" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Podporuje schémy http:// a socks5://"
+          }
+        },
+        "zh-Hans" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "支持 http:// 和 socks5:// 格式"
+          }
+        },
+        "zh-Hant" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "支持 http:// 和 socks5:// 格式"
+          }
+        }
+      }
+    },
+    "setting.advance.http_proxy_url_footer" : {
+      "localizations" : {
+        "en" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Routes all translation requests through the specified proxy. Leave empty to use system default networking."
+          }
+        },
+        "sk" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "Presmeruje všetky prekladové požiadavky cez zadaný proxy. Nechajte prázdne pre predvolené sieťové nastavenia."
+          }
+        },
+        "zh-Hans" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "所有翻译服务请求将通过指定的代理发出。留空则使用系统默认网络设置。"
+          }
+        },
+        "zh-Hant" : {
+          "stringUnit" : {
+            "state" : "translated",
+            "value" : "所有翻譯服務請求將透過指定的代理發出。留空則使用系統預設網路設定。"
+          }
+        }
+      }
+    },
     "setting.advance.header.ocr_settings" : {
       "localizations" : {
         "en" : {
diff --git a/Easydict/Swift/Feature/Configuration/Defaults.Keys+Extension.swift b/Easydict/Swift/Feature/Configuration/Defaults.Keys+Extension.swift
index 67348939a..32e0c85c3 100644
--- a/Easydict/Swift/Feature/Configuration/Defaults.Keys+Extension.swift
+++ b/Easydict/Swift/Feature/Configuration/Defaults.Keys+Extension.swift
@@ -147,6 +147,11 @@ extension Defaults.Keys {
     static var enableHTTPServer = Key<Bool>("enableHTTPServer", default: false)
     static var httpPort = Key<String>("httpPort", default: "8080")
 
+    /// Local HTTP/SOCKS proxy URL used for all translation service requests.
+    /// Supports formats: `http://host:port`, `socks5://host:port`, or `host:port`.
+    /// Leave empty to use system default networking (no custom proxy).
+    static var httpProxyURL = Key<String>("httpProxyURL", default: "")
+
     static var enableAppleOfflineTranslation = Key<Bool>(
         "enableAppleOfflineTranslation", default: false
     )
diff --git a/Easydict/Swift/Service/Ali/AliService.swift b/Easydict/Swift/Service/Ali/AliService.swift
index b53b791bb..75c119dd1 100644
--- a/Easydict/Swift/Service/Ali/AliService.swift
+++ b/Easydict/Swift/Service/Ali/AliService.swift
@@ -204,7 +204,7 @@ class AliService: QueryService {
             result = currentResult
         }
 
-        let request = AF.request("https://mt.aliyuncs.com", method: .post, parameters: param)
+        let request = EAF.request("https://mt.aliyuncs.com", method: .post, parameters: param)
 
         queryModel.setStop({
             request.cancel()
diff --git a/Easydict/Swift/Service/Baidu/BaiduApiTranslate.swift b/Easydict/Swift/Service/Baidu/BaiduApiTranslate.swift
index f17eba05f..e30c22078 100644
--- a/Easydict/Swift/Service/Baidu/BaiduApiTranslate.swift
+++ b/Easydict/Swift/Service/Baidu/BaiduApiTranslate.swift
@@ -61,7 +61,7 @@ class BaiduApiTranslate: NSObject {
             "sign": signMd5,
         ]
 
-        let request = AF.request(
+        let request = EAF.request(
             "https://fanyi-api.baidu.com/api/trans/vip/translate",
             method: .post,
             parameters: param,
diff --git a/Easydict/Swift/Service/Baidu/BaiduService+OCR.swift b/Easydict/Swift/Service/Baidu/BaiduService+OCR.swift
index f632965fa..16b345b8b 100644
--- a/Easydict/Swift/Service/Baidu/BaiduService+OCR.swift
+++ b/Easydict/Swift/Service/Baidu/BaiduService+OCR.swift
@@ -53,7 +53,7 @@ extension BaiduService {
         let url = "\(kBaiduTranslateURL)/getocr"
 
         do {
-            let response = try await AF.upload(
+            let response = try await EAF.upload(
                 multipartFormData: { formData in
                     formData.append(imageData, withName: "image", fileName: "blob", mimeType: "image/png")
                     formData.append(Data((fromLang ?? "").utf8), withName: "from")
diff --git a/Easydict/Swift/Service/Baidu/BaiduService.swift b/Easydict/Swift/Service/Baidu/BaiduService.swift
index 9d75a2c9e..16d612583 100644
--- a/Easydict/Swift/Service/Baidu/BaiduService.swift
+++ b/Easydict/Swift/Service/Baidu/BaiduService.swift
@@ -314,7 +314,7 @@ final class BaiduService: QueryService {
         let url = "\(kBaiduTranslateURL)/langdetect"
 
         do {
-            let response = try await AF.request(
+            let response = try await EAF.request(
                 url,
                 method: .post,
                 parameters: ["query": queryString],
diff --git a/Easydict/Swift/Service/Bing/BingRequest.swift b/Easydict/Swift/Service/Bing/BingRequest.swift
index 9b44625ef..71921c03e 100644
--- a/Easydict/Swift/Service/Bing/BingRequest.swift
+++ b/Easydict/Swift/Service/Bing/BingRequest.swift
@@ -490,7 +490,7 @@ class BingRequest {
     )
         -> DataRequest {
         let encoding: ParameterEncoding = method == .get ? URLEncoding.default : URLEncoding.httpBody
-        let request = AF.request(
+        let request = EAF.request(
             url,
             method: method,
             parameters: parameters,
diff --git a/Easydict/Swift/Service/Caiyun/CaiyunService.swift b/Easydict/Swift/Service/Caiyun/CaiyunService.swift
index e862aef31..42b3330f7 100644
--- a/Easydict/Swift/Service/Caiyun/CaiyunService.swift
+++ b/Easydict/Swift/Service/Caiyun/CaiyunService.swift
@@ -79,7 +79,7 @@ public final class CaiyunService: QueryService {
             result = currentResult
         }
 
-        let request = AF.request(
+        let request = EAF.request(
             apiEndPoint,
             method: .post,
             parameters: parameters,
diff --git a/Easydict/Swift/Service/Claude/ClaudeService.swift b/Easydict/Swift/Service/Claude/ClaudeService.swift
index bff017cb4..5923e1520 100644
--- a/Easydict/Swift/Service/Claude/ClaudeService.swift
+++ b/Easydict/Swift/Service/Claude/ClaudeService.swift
@@ -90,7 +90,7 @@ public final class ClaudeService: StreamService {
                     )
                     let urlRequest = try createURLRequest(body: requestBody)
 
-                    let (asyncBytes, response) = try await URLSession.shared.bytes(for: urlRequest)
+                    let (asyncBytes, response) = try await EURLSession.bytes(for: urlRequest)
                     try await validateHTTPResponse(response, asyncBytes: asyncBytes)
 
                     try await processStreamBytes(asyncBytes, continuation: continuation)
diff --git a/Easydict/Swift/Service/DeepL/DeepLService+Translate.swift b/Easydict/Swift/Service/DeepL/DeepLService+Translate.swift
index 7c23815f6..d4496893f 100644
--- a/Easydict/Swift/Service/DeepL/DeepLService+Translate.swift
+++ b/Easydict/Swift/Service/DeepL/DeepLService+Translate.swift
@@ -85,7 +85,7 @@ extension DeepLService {
 
         let startTime = CFAbsoluteTimeGetCurrent()
 
-        let dataRequest = AF.request(request)
+        let dataRequest = EAF.request(request)
             .validate(statusCode: 200 ..< 300)
 
         dataRequest.responseData { [weak self] response in
@@ -196,7 +196,7 @@ extension DeepLService {
 
         let authorization = "DeepL-Auth-Key \(authKey)"
         let startTime = CFAbsoluteTimeGetCurrent()
-        let request = AF.request(
+        let request = EAF.request(
             url,
             method: .post,
             parameters: params,
diff --git a/Easydict/Swift/Service/Doubao/DoubaoService.swift b/Easydict/Swift/Service/Doubao/DoubaoService.swift
index be378bec8..da764778e 100644
--- a/Easydict/Swift/Service/Doubao/DoubaoService.swift
+++ b/Easydict/Swift/Service/Doubao/DoubaoService.swift
@@ -107,7 +107,7 @@ public final class DoubaoService: StreamService {
                     let requestBody = buildRequestBody(text: text, transType: transType)
                     let urlRequest = try createURLRequest(body: requestBody)
 
-                    let (asyncBytes, response) = try await URLSession.shared.bytes(for: urlRequest)
+                    let (asyncBytes, response) = try await EURLSession.bytes(for: urlRequest)
                     try validateHTTPResponse(response)
 
                     try await processStreamBytes(asyncBytes, continuation: continuation)
diff --git a/Easydict/Swift/Service/Google/GoogleService+Translate.swift b/Easydict/Swift/Service/Google/GoogleService+Translate.swift
index a246cd829..c643e9514 100644
--- a/Easydict/Swift/Service/Google/GoogleService+Translate.swift
+++ b/Easydict/Swift/Service/Google/GoogleService+Translate.swift
@@ -42,7 +42,7 @@ extension GoogleService {
         parameters: Parameters? = nil
     )
         -> DataRequest {
-        AF.request(
+        EAF.request(
             url,
             method: .get,
             parameters: parameters,
diff --git a/Easydict/Swift/Service/NiuTrans/NiuTransService.swift b/Easydict/Swift/Service/NiuTrans/NiuTransService.swift
index e854d8452..000f607ca 100644
--- a/Easydict/Swift/Service/NiuTrans/NiuTransService.swift
+++ b/Easydict/Swift/Service/NiuTrans/NiuTransService.swift
@@ -182,7 +182,7 @@ extension NiuTransService {
             "source": "Easydict",
         ]
 
-        let request = AF.request(
+        let request = EAF.request(
             kNiuTransAPIURL,
             method: .post,
             parameters: params,
diff --git a/Easydict/Swift/Service/Ollama/OllamaService.swift b/Easydict/Swift/Service/Ollama/OllamaService.swift
index 5c4bdc082..8bc6d9f31 100644
--- a/Easydict/Swift/Service/Ollama/OllamaService.swift
+++ b/Easydict/Swift/Service/Ollama/OllamaService.swift
@@ -76,7 +76,7 @@ class OllamaService: BaseOpenAIService {
         }
 
         let modelsURL = trueBaseURL.appendingPathComponent("api/tags")
-        let dataTask = AF.request(modelsURL).serializingDecodable(OllamaModels.self)
+        let dataTask = EAF.request(modelsURL).serializingDecodable(OllamaModels.self)
         return try await dataTask.value
     }
 }
diff --git a/Easydict/Swift/Service/Tencent/TencentService.swift b/Easydict/Swift/Service/Tencent/TencentService.swift
index cf4fd0afd..e1bf6dac1 100644
--- a/Easydict/Swift/Service/Tencent/TencentService.swift
+++ b/Easydict/Swift/Service/Tencent/TencentService.swift
@@ -101,7 +101,7 @@ public final class TencentService: QueryService {
             result = currentResult
         }
 
-        let request = AF.request(
+        let request = EAF.request(
             endpoint,
             method: .post,
             parameters: parameters,
diff --git a/Easydict/Swift/Service/Volcano/VolcanoService.swift b/Easydict/Swift/Service/Volcano/VolcanoService.swift
index 610867aa5..5d8473b4a 100644
--- a/Easydict/Swift/Service/Volcano/VolcanoService.swift
+++ b/Easydict/Swift/Service/Volcano/VolcanoService.swift
@@ -100,7 +100,7 @@ public final class VolcanoService: QueryService {
 
         let afHost = host + uri + "?" + queryString
 
-        let request = AF.request(
+        let request = EAF.request(
             afHost,
             method: .post,
             parameters: parameters,
diff --git a/Easydict/Swift/Service/Youdao/YoudaoService+Dict.swift b/Easydict/Swift/Service/Youdao/YoudaoService+Dict.swift
index a2b734d20..b2b550c44 100644
--- a/Easydict/Swift/Service/Youdao/YoudaoService+Dict.swift
+++ b/Easydict/Swift/Service/Youdao/YoudaoService+Dict.swift
@@ -48,7 +48,7 @@ extension YoudaoService {
 
         do {
             // Get the raw data
-            let responseData = try await AF.request(
+            let responseData = try await EAF.request(
                 url,
                 method: .post,
                 parameters: parameters
@@ -128,7 +128,7 @@ extension YoudaoService {
 
         do {
             // Get the raw data
-            let responseData = try await AF.request(
+            let responseData = try await EAF.request(
                 url,
                 method: .get,
                 parameters: parameters
diff --git a/Easydict/Swift/Service/Youdao/YoudaoService+OCR.swift b/Easydict/Swift/Service/Youdao/YoudaoService+OCR.swift
index 2782ffea4..18896dd07 100644
--- a/Easydict/Swift/Service/Youdao/YoudaoService+OCR.swift
+++ b/Easydict/Swift/Service/Youdao/YoudaoService+OCR.swift
@@ -37,7 +37,7 @@ extension YoudaoService {
         let parameters = ["imgBase": imageBase]
 
         do {
-            let response = try await AF.request(
+            let response = try await EAF.request(
                 "https://aidemo.youdao.com/ocrtransapi1",
                 method: .post,
                 parameters: parameters,
diff --git a/Easydict/Swift/Service/Youdao/YoudaoService+Translate.swift b/Easydict/Swift/Service/Youdao/YoudaoService+Translate.swift
index 5c5c096fc..065d601a0 100644
--- a/Easydict/Swift/Service/Youdao/YoudaoService+Translate.swift
+++ b/Easydict/Swift/Service/Youdao/YoudaoService+Translate.swift
@@ -80,7 +80,7 @@ extension YoudaoService {
             ], uniquingKeysWith: { _, new in new }
         )
 
-        let data = try await AF.request(
+        let data = try await EAF.request(
             "\(kYoudaoDictURL)/webtranslate",
             method: .post,
             parameters: parameters,
@@ -121,7 +121,7 @@ extension YoudaoService {
             ], uniquingKeysWith: { _, new in new }
         )
 
-        return try await AF.request(
+        return try await EAF.request(
             "\(kYoudaoDictURL)/webtranslate/key",
             method: .get,
             parameters: parameters,
diff --git a/Easydict/Swift/Utility/NetworkSession.swift b/Easydict/Swift/Utility/NetworkSession.swift
new file mode 100644
index 000000000..10d806b57
--- /dev/null
+++ b/Easydict/Swift/Utility/NetworkSession.swift
@@ -0,0 +1,135 @@
+//
+//  NetworkSession.swift
+//  Easydict
+//
+//  Created by tisfeng on 2026/4/9.
+//  Copyright © 2026 izual. All rights reserved.
+//
+
+import Alamofire
+import Combine
+import Defaults
+import Foundation
+
+// MARK: - NetworkSession
+
+/// Manages the app-wide Alamofire Session, supporting an optional user-configured HTTP/SOCKS proxy.
+///
+/// When `Defaults[.httpProxyURL]` is non-empty the session is configured with
+/// the parsed proxy dictionary; otherwise the system default session is used.
+final class NetworkSession {
+    // MARK: Lifecycle
+
+    private init() {
+        setupSessionObserver()
+    }
+
+    // MARK: Internal
+
+    static let shared = NetworkSession()
+
+    /// Current Alamofire Session. Updated automatically when the proxy setting changes.
+    private(set) var session: Alamofire.Session = .default
+
+    /// Current URLSession. Updated automatically when the proxy setting changes.
+    private(set) var urlSession: URLSession = .shared
+
+    // MARK: Private
+
+    private var cancellables: Set<AnyCancellable> = []
+
+    /// Builds a proxy-configured `URLSessionConfiguration`, or returns `nil` when the URL
+    /// is empty or cannot be parsed.
+    private static func makeProxyConfiguration(proxyURL: String) -> URLSessionConfiguration? {
+        let trimmed = proxyURL.trimmingCharacters(in: .whitespaces)
+        guard !trimmed.isEmpty, let proxyDict = proxyDictionary(for: trimmed) else {
+            return nil
+        }
+        let config = URLSessionConfiguration.default
+        config.connectionProxyDictionary = proxyDict
+        return config
+    }
+
+    /// Creates an Alamofire Session configured with the given proxy URL string.
+    ///
+    /// Returns `Session.default` when the URL is empty or cannot be parsed.
+    private static func makeSession(proxyURL: String) -> Alamofire.Session {
+        guard let config = makeProxyConfiguration(proxyURL: proxyURL) else {
+            return .default
+        }
+        return Alamofire.Session(configuration: config)
+    }
+
+    /// Creates a URLSession configured with the given proxy URL string.
+    ///
+    /// Returns `URLSession.shared` when the URL is empty or cannot be parsed.
+    private static func makeURLSession(proxyURL: String) -> URLSession {
+        guard let config = makeProxyConfiguration(proxyURL: proxyURL) else {
+            return .shared
+        }
+        return URLSession(configuration: config)
+    }
+
+    /// Parses a proxy URL string into a `connectionProxyDictionary` for `URLSessionConfiguration`.
+    ///
+    /// Supported formats:
+    /// - `http://host:port`  — HTTP proxy (also used for HTTPS via CONNECT tunnel)
+    /// - `socks5://host:port` — SOCKS5 proxy
+    /// - `host:port`         — treated as HTTP proxy
+    private static func proxyDictionary(for proxyURL: String) -> [AnyHashable: Any]? {
+        var urlString = proxyURL
+        if !urlString.contains("://") {
+            urlString = "http://" + urlString
+        }
+
+        guard let url = URL(string: urlString),
+              let host = url.host,
+              let port = url.port,
+              !host.isEmpty
+        else {
+            return nil
+        }
+
+        var dict: [AnyHashable: Any] = [:]
+        let scheme = url.scheme ?? "http"
+
+        if scheme == "socks5" || scheme == "socks" {
+            dict[kCFNetworkProxiesSOCKSEnable as String] = true
+            dict[kCFNetworkProxiesSOCKSProxy as String] = host
+            dict[kCFNetworkProxiesSOCKSPort as String] = port
+        } else {
+            // HTTP proxy — handles plain HTTP and HTTPS (via CONNECT tunnel)
+            dict[kCFNetworkProxiesHTTPEnable as String] = true
+            dict[kCFNetworkProxiesHTTPProxy as String] = host
+            dict[kCFNetworkProxiesHTTPPort as String] = port
+            dict[kCFNetworkProxiesHTTPSEnable as String] = true
+            dict[kCFNetworkProxiesHTTPSProxy as String] = host
+            dict[kCFNetworkProxiesHTTPSPort as String] = port
+        }
+
+        return dict
+    }
+
+    private func setupSessionObserver() {
+        Defaults.publisher(.httpProxyURL, options: [.initial])
+            .sink { [weak self] change in
+                self?.session = NetworkSession.makeSession(proxyURL: change.newValue)
+                self?.urlSession = NetworkSession.makeURLSession(proxyURL: change.newValue)
+            }
+            .store(in: &cancellables)
+    }
+}
+
+// MARK: - Global accessor
+
+/// A proxy-aware Alamofire Session for making HTTP requests throughout the app.
+///
+/// Use `EAF` instead of Alamofire's global `AF` so that requests automatically
+/// route through the user-configured local HTTP/SOCKS proxy when one is set.
+var EAF: Alamofire.Session { NetworkSession.shared.session }
+
+/// A proxy-aware URLSession for making streaming HTTP requests throughout the app.
+///
+/// Use `EURLSession` instead of `URLSession.shared` so that streaming requests
+/// route through the user-configured local HTTP/SOCKS proxy when one is set.
+var EURLSession: URLSession { NetworkSession.shared.urlSession }
diff --git a/Easydict/Swift/View/SettingView/Tabs/TabView/AdvancedTab.swift b/Easydict/Swift/View/SettingView/Tabs/TabView/AdvancedTab.swift
index 78696d82a..f89a2dcfa 100644
--- a/Easydict/Swift/View/SettingView/Tabs/TabView/AdvancedTab.swift
+++ b/Easydict/Swift/View/SettingView/Tabs/TabView/AdvancedTab.swift
@@ -417,6 +417,36 @@ struct AdvancedTab: View {
             } header: {
                 Text("setting.advance.header.http_server")
             }
+
+            // Local proxy
+            Section {
+                LabeledContent {
+                    TextField(
+                        "",
+                        text: $httpProxyURL,
+                        prompt: Text(verbatim: "http://127.0.0.1:7890")
+                    )
+                    .frame(width: 200)
+                    .fixedSize(horizontal: true, vertical: false)
+                } label: {
+                    AdvancedTabItemView(
+                        color: .blue,
+                        icon: .link,
+                        labelText: "setting.advance.http_proxy_url",
+                        subtitleText: "setting.advance.http_proxy_url_desc"
+                    )
+                }
+            } header: {
+                Text("setting.advance.header.local_proxy")
+            } footer: {
+                HStack {
+                    Text("setting.advance.http_proxy_url_footer")
+                        .font(.footnote)
+                        .foregroundColor(.secondary)
+                        .padding(.leading, 10)
+                    Spacer()
+                }
+            }
         }
         .formStyle(.grouped)
     }
@@ -460,6 +490,7 @@ struct AdvancedTab: View {
 
     @Default(.enableHTTPServer) private var enableHTTPServer
     @Default(.httpPort) private var httpPort
+    @Default(.httpProxyURL) private var httpProxyURL
 
     @Default(.maxWindowHeightPercentage) private var maxWindowHeightPercentageValue