diff --git a/js/api/api.js b/js/api/api.js
index c41d4f7..1ec2b40 100644
--- a/js/api/api.js
+++ b/js/api/api.js
@@ -66,7 +66,7 @@ async function uploadToMistral(fileToProcess, mistralKey) {
     // 使用统一配置获取代理地址
     const proxyUrl = (typeof window !== 'undefined' && window.ProxyConfig)
         ? window.ProxyConfig.getMistralUrl('/v1/files')
-        : 'http://localhost:3456/api/mistral/v1/files';
+        : (window.PBX_PROXY_BASE_URL || '/api') + '/mistral/v1/files';
 
     const response = await fetch(proxyUrl, {
         method: 'POST',
@@ -99,9 +99,7 @@ async function uploadFileToOssViaProxy(fileToProcess, fileName) {
     // 使用统一配置获取代理地址
     const proxyUrl = (typeof window !== 'undefined' && window.ProxyConfig)
         ? window.ProxyConfig.getOssUploadUrl()
-        : (window.location.hostname === 'localhost' || window.location.hostname === '127.0.0.1'
-            ? 'http://localhost:3456/api/upload/oss'
-            : '/api/upload/oss');
+        : (window.PBX_PROXY_BASE_URL || '/api') + '/upload/oss';
 
     const response = await fetch(proxyUrl, {
         method: 'POST',
@@ -133,7 +131,7 @@ async function getMistralSignedUrl(fileId, mistralKey) {
     // 使用统一配置获取代理地址
     const proxyUrl = (typeof window !== 'undefined' && window.ProxyConfig)
         ? window.ProxyConfig.getMistralUrl(`/v1/files/${fileId}/url?expiry=24`)
-        : `http://localhost:3456/api/mistral/v1/files/${fileId}/url?expiry=24`;
+        : (window.PBX_PROXY_BASE_URL || '/api') + `/mistral/v1/files/${fileId}/url?expiry=24`;
 
     const response = await fetch(proxyUrl, {
         method: 'GET',
@@ -162,7 +160,7 @@ async function callMistralOcr(signedUrl, mistralKey) {
     // 使用统一配置获取代理地址
     const proxyUrl = (typeof window !== 'undefined' && window.ProxyConfig)
         ? window.ProxyConfig.getMistralUrl('/v1/ocr')
-        : 'http://localhost:3456/api/mistral/v1/ocr';
+        : (window.PBX_PROXY_BASE_URL || '/api') + '/mistral/v1/ocr';
 
     const response = await fetch(proxyUrl, {
         method: 'POST',
@@ -202,7 +200,7 @@ async function deleteMistralFile(fileId, apiKey) {
     // 使用统一配置获取代理地址
     const deleteUrl = (typeof window !== 'undefined' && window.ProxyConfig)
         ? window.ProxyConfig.getMistralUrl(`/v1/files/${fileId}`)
-        : `http://localhost:3456/api/mistral/v1/files/${fileId}`;
+        : (window.PBX_PROXY_BASE_URL || '/api') + `/mistral/v1/files/${fileId}`;
 
     try {
         const response = await fetch(deleteUrl, {
diff --git a/js/chatbot/core/api-config-builder.js b/js/chatbot/core/api-config-builder.js
index 018e1dc..a531f29 100644
--- a/js/chatbot/core/api-config-builder.js
+++ b/js/chatbot/core/api-config-builder.js
@@ -162,7 +162,7 @@
     const proxyBaseUrl = options.proxyBaseUrl ||
                         (typeof window !== 'undefined' && window.ProxyConfig ? window.ProxyConfig.getProxyUrl() : null) ||
                         (typeof window !== 'undefined' && window.PBX_PROXY_BASE_URL ? window.PBX_PROXY_BASE_URL : null) ||
-                        'http://localhost:3456';
+                        '/api';
     const provider = options.provider || 'openai';
 
     // 获取当前选择的模型ID（如果有模型检测模块）
diff --git a/js/chatbot/core/llm-caller.js b/js/chatbot/core/llm-caller.js
index e0a75b4..690ec0a 100644
--- a/js/chatbot/core/llm-caller.js
+++ b/js/chatbot/core/llm-caller.js
@@ -140,7 +140,7 @@
         const useProxy = globalProxyMode === 'proxy';
         const proxyBaseUrl = (typeof window !== 'undefined' && window.ProxyConfig)
           ? window.ProxyConfig.getProxyUrl()
-          : (window.PBX_PROXY_BASE_URL || 'http://localhost:3456');
+          : (window.PBX_PROXY_BASE_URL || '/api');
 
         // 确定提供商（从模型 ID 或配置推断）
         let provider = 'openai';
diff --git a/js/chatbot/core/message-sender.js b/js/chatbot/core/message-sender.js
index 2fefbbf..2ebaecd 100644
--- a/js/chatbot/core/message-sender.js
+++ b/js/chatbot/core/message-sender.js
@@ -447,7 +447,7 @@ async function sendChatbotMessage(userInput, updateChatbotUI, externalConfig = n
   const useProxy = globalProxyMode === 'proxy';
   const proxyBaseUrl = (typeof window !== 'undefined' && window.ProxyConfig)
     ? window.ProxyConfig.getProxyUrl()
-    : (window.PBX_PROXY_BASE_URL || 'http://localhost:3456');
+    : (window.PBX_PROXY_BASE_URL || '/api');
 
   // 在使用代理服务器模式时，API Key 在后端配置，前端可以没有 API Key
   // 否则，检查前端是否配置了有效的 API Key
@@ -1740,7 +1740,7 @@ async function singleChunkSummary(sysPrompt, userInput, config, apiKey) {
   const useProxy = globalProxyMode === 'proxy';
   const proxyBaseUrl = (typeof window !== 'undefined' && window.ProxyConfig)
     ? window.ProxyConfig.getProxyUrl()
-    : (window.PBX_PROXY_BASE_URL || 'http://localhost:3456');
+    : (window.PBX_PROXY_BASE_URL || '/api');
 
   // 只做单轮整理，不带历史
   let apiConfig;
diff --git a/js/history/history_detail_scripts.js b/js/history/history_detail_scripts.js
index 220bd77..76aea71 100644
--- a/js/history/history_detail_scripts.js
+++ b/js/history/history_detail_scripts.js
@@ -808,7 +808,7 @@ async function executeMinerUStructuredTranslation() {
   // 使用统一配置获取代理地址
   const PROXY_BASE = (typeof window !== 'undefined' && window.ProxyConfig)
     ? window.ProxyConfig.getProxyUrl()
-    : (window.PBX_PROXY_BASE_URL || 'http://localhost:3456');
+    : (window.PBX_PROXY_BASE_URL || '/api');
 
   // 获取翻译配置
   const settings = typeof loadSettings === 'function' ? loadSettings() : {};
diff --git a/js/process/main.js b/js/process/main.js
index b22f945..0a51581 100644
--- a/js/process/main.js
+++ b/js/process/main.js
@@ -800,7 +800,7 @@ const fileType = fileToProcess.name.split('.').pop().toLowerCase();
                                 provider: selectedTranslationModelName,
                                 proxyBase: (typeof window !== 'undefined' && window.ProxyConfig)
                                     ? window.ProxyConfig.getProxyUrl()
-                                    : (window.PBX_PROXY_BASE_URL || 'http://localhost:3456'),
+                                    : (window.PBX_PROXY_BASE_URL || '/api'),
                                 // 允许从设置自定义重试，若无则用默认
                                 maxRetries: (typeof loadSettings === 'function' ? (loadSettings().structuredMaxRetries || undefined) : undefined),
                                 retryDelay: (typeof loadSettings === 'function' ? (loadSettings().structuredRetryDelayMs || undefined) : undefined)
diff --git a/js/process/mineru-structured-translation.js b/js/process/mineru-structured-translation.js
index 73ba5f2..c0536f2 100644
--- a/js/process/mineru-structured-translation.js
+++ b/js/process/mineru-structured-translation.js
@@ -717,7 +717,7 @@ ${jsonContent}
       const proxyBase = options.proxyBase ||
                         (typeof window !== 'undefined' && window.ProxyConfig ? window.ProxyConfig.getProxyUrl() : null) ||
                         (typeof window !== 'undefined' && window.PBX_PROXY_BASE_URL ? window.PBX_PROXY_BASE_URL : null) ||
-                        'http://localhost:3456';
+                        '/api';
       const provider = options.provider || 'aliyun';
 
       // 后端代理端点映射
@@ -836,7 +836,7 @@ ${jsonContent}
       // 前端发出的请求源头
       const proxyUrl = (typeof window !== 'undefined' && window.ProxyConfig)
         ? window.ProxyConfig.getProxyUrl()
-        : (window.PBX_PROXY_BASE_URL || 'http://localhost:3456');
+        : (window.PBX_PROXY_BASE_URL || '/api');
       const predefinedConfigs = {
         'proxy': {
           endpoint: `${proxyUrl}/api/llm/aliyun/v1/chat/completions`,
diff --git a/js/process/ocr-adapters/mistral-adapter.js b/js/process/ocr-adapters/mistral-adapter.js
index 8e4f711..8c40193 100644
--- a/js/process/ocr-adapters/mistral-adapter.js
+++ b/js/process/ocr-adapters/mistral-adapter.js
@@ -12,13 +12,13 @@ class MistralOcrAdapter extends OcrAdapter {
     this.currentKeyIndex = 0;
 
     // 使用统一配置获取代理地址
-    // 优先级：config.baseUrl > window.ProxyConfig > 默认值
+    // 优先级：config.baseUrl > window.ProxyConfig > PBX_PROXY_BASE_URL > 默认相对路径
     if (config.baseUrl && config.baseUrl !== 'https://api.mistral.ai') {
       this.baseUrl = config.baseUrl.replace(/\/+$/, '');
     } else if (typeof window !== 'undefined' && window.ProxyConfig) {
       this.baseUrl = window.ProxyConfig.getMistralUrl();
     } else {
-      this.baseUrl = 'http://localhost:3456/api/mistral';
+      this.baseUrl = (window.PBX_PROXY_BASE_URL || '/api') + '/mistral';
     }
   }
 
diff --git a/js/process/ocr-manager.js b/js/process/ocr-manager.js
index a55453b..b7de13f 100644
--- a/js/process/ocr-manager.js
+++ b/js/process/ocr-manager.js
@@ -97,7 +97,7 @@ class OcrManager {
         // 使用统一配置获取默认 workerUrl
         const mineruDefaultUrl = (typeof window !== 'undefined' && window.ProxyConfig)
           ? window.ProxyConfig.getProxyUrl()
-          : 'http://localhost:3456';
+          : (window.PBX_PROXY_BASE_URL || '/api');
         return {
           engine: 'mineru',
           token: localStorage.getItem('ocrMinerUToken') || '',
@@ -113,7 +113,7 @@ class OcrManager {
         // 使用统一配置获取默认 workerUrl
         const doc2xDefaultUrl = (typeof window !== 'undefined' && window.ProxyConfig)
           ? window.ProxyConfig.getProxyUrl()
-          : 'http://localhost:3456';
+          : (window.PBX_PROXY_BASE_URL || '/api');
         return {
           engine: 'doc2x',
           token: localStorage.getItem('ocrDoc2XToken') || '',
diff --git a/js/process/translation.js b/js/process/translation.js
index af517ec..d767b4b 100644
--- a/js/process/translation.js
+++ b/js/process/translation.js
@@ -705,7 +705,7 @@ async function translateMarkdown(
                 // 所有翻译请求都指向后端代理，由后端决定使用哪个模型
                 endpoint: (typeof window !== 'undefined' && window.ProxyConfig)
                     ? window.ProxyConfig.getLLMProxyUrl('tongyi', '/v1/chat/completions')
-                    : ((window.PBX_PROXY_BASE_URL || 'http://localhost:3456') + '/api/llm/tongyi/v1/chat/completions'),
+                    : ((window.PBX_PROXY_BASE_URL || '/api') + '/llm/tongyi/v1/chat/completions'),
                 modelName: '通义百炼',
                 headers: { 'Content-Type': 'application/json' },
                 bodyBuilder: (sys, user) => {
diff --git a/js/ui/ocr-settings.js b/js/ui/ocr-settings.js
index 13de7e2..d5a1e2a 100644
--- a/js/ui/ocr-settings.js
+++ b/js/ui/ocr-settings.js
@@ -125,7 +125,8 @@ class OcrSettingsManager {
         this.elements.mineruToken.value = localStorage.getItem(this.keys.mineruToken) || '';
       }
       if (this.elements.mineruWorkerUrl) {
-        this.elements.mineruWorkerUrl.value = localStorage.getItem(this.keys.mineruWorkerUrl) || 'http://localhost:3456';
+        const defaultUrl = (typeof window !== 'undefined' && window.ProxyConfig) ? window.ProxyConfig.getProxyUrl() : '/api';
+        this.elements.mineruWorkerUrl.value = localStorage.getItem(this.keys.mineruWorkerUrl) || defaultUrl;
       }
       if (this.elements.mineruEnableOcr) {
         this.elements.mineruEnableOcr.checked = localStorage.getItem(this.keys.mineruEnableOcr) !== 'false';
@@ -151,7 +152,8 @@ class OcrSettingsManager {
         this.elements.doc2xToken.value = localStorage.getItem(this.keys.doc2xToken) || '';
       }
       if (this.elements.doc2xWorkerUrl) {
-        this.elements.doc2xWorkerUrl.value = localStorage.getItem(this.keys.doc2xWorkerUrl) || 'http://localhost:3456';
+        const defaultUrl = (typeof window !== 'undefined' && window.ProxyConfig) ? window.ProxyConfig.getProxyUrl() : '/api';
+        this.elements.doc2xWorkerUrl.value = localStorage.getItem(this.keys.doc2xWorkerUrl) || defaultUrl;
       }
       if (this.elements.doc2xFormulaMode) {
         this.elements.doc2xFormulaMode.value = localStorage.getItem(this.keys.doc2xFormulaMode) || 'dollar';
@@ -514,10 +516,11 @@ class OcrSettingsManager {
         }
 
       case 'mineru':
+        const mineruDefaultUrl = (typeof window !== 'undefined' && window.ProxyConfig) ? window.ProxyConfig.getProxyUrl() : '/api';
         return {
           engine: 'mineru',
           token: localStorage.getItem(this.keys.mineruToken) || '',
-          workerUrl: (localStorage.getItem(this.keys.mineruWorkerUrl) || 'http://localhost:3456').replace(/\/+$/, ''), // 去掉末尾斜杠
+          workerUrl: (localStorage.getItem(this.keys.mineruWorkerUrl) || mineruDefaultUrl).replace(/\/+$/, ''), // 去掉末尾斜杠
           authKey: localStorage.getItem(this.keys.workerAuthKey) || '',
           tokenMode: localStorage.getItem(this.keys.mineruTokenMode) || 'backend', // 默认后端转发模式
           enableOcr: localStorage.getItem(this.keys.mineruEnableOcr) !== 'false',
@@ -527,10 +530,11 @@ class OcrSettingsManager {
         };
 
       case 'doc2x':
+        const doc2xDefaultUrl = (typeof window !== 'undefined' && window.ProxyConfig) ? window.ProxyConfig.getProxyUrl() : '/api';
         return {
           engine: 'doc2x',
           token: localStorage.getItem(this.keys.doc2xToken) || '',
-          workerUrl: (localStorage.getItem(this.keys.doc2xWorkerUrl) || 'http://localhost:3456').replace(/\/+$/, ''), // 去掉末尾斜杠
+          workerUrl: (localStorage.getItem(this.keys.doc2xWorkerUrl) || doc2xDefaultUrl).replace(/\/+$/, ''), // 去掉末尾斜杠
           authKey: localStorage.getItem(this.keys.workerAuthKey) || '',
           tokenMode: localStorage.getItem(this.keys.doc2xTokenMode) || 'backend', // 默认后端转发模式
           formulaMode: localStorage.getItem(this.keys.doc2xFormulaMode) || 'dollar',
diff --git a/js/ui/ui_model_ocr_config.js b/js/ui/ui_model_ocr_config.js
index a9175b7..ee34cba 100644
--- a/js/ui/ui_model_ocr_config.js
+++ b/js/ui/ui_model_ocr_config.js
@@ -60,7 +60,8 @@
    */
   function renderMinerUConfig(container) {
     // 从 localStorage 加载配置
-    const workerUrl = localStorage.getItem('ocrMinerUWorkerUrl') || 'http://localhost:3456';
+    const defaultUrl = (typeof window !== 'undefined' && window.ProxyConfig) ? window.ProxyConfig.getProxyUrl() : '/api';
+    const workerUrl = localStorage.getItem('ocrMinerUWorkerUrl') || defaultUrl;
     const authKey = localStorage.getItem('ocrWorkerAuthKey') || '';
     const tokenMode = localStorage.getItem('ocrMinerUTokenMode') || 'backend';
     const token = localStorage.getItem('ocrMinerUToken') || '';
@@ -336,7 +337,8 @@
    */
   function renderDoc2XConfig(container) {
     // 从 localStorage 加载配置
-    const workerUrl = localStorage.getItem('ocrDoc2XWorkerUrl') || 'http://localhost:3456';
+    const defaultUrl = (typeof window !== 'undefined' && window.ProxyConfig) ? window.ProxyConfig.getProxyUrl() : '/api';
+    const workerUrl = localStorage.getItem('ocrDoc2XWorkerUrl') || defaultUrl;
     const authKey = localStorage.getItem('ocrWorkerAuthKey') || '';
     const tokenMode = localStorage.getItem('ocrDoc2XTokenMode') || 'backend';
     const token = localStorage.getItem('ocrDoc2XToken') || '';
diff --git a/views/history/history_detail.html b/views/history/history_detail.html
index d95096e..0ae78c6 100644
--- a/views/history/history_detail.html
+++ b/views/history/history_detail.html
@@ -864,10 +864,13 @@
     <!-- Phase 3.5: 性能优化配置（必须在所有 chatbot 模块之前加载） -->
     <script src="../../js/chatbot/config/performance-config.js"></script>
     <!-- 历史页 Chatbot 代理配置：使用阿里云百炼平台，保护 API Key -->
+    <script src="../../js/config/proxy-config.js"></script>
     <script>
-      // 全局配置：启用代理模式，使用本地代理服务器
+      // 全局配置：启用代理模式，使用 ProxyConfig 自动检测环境
       window.PBX_PROXY_MODE = "proxy";
-      window.PBX_PROXY_BASE_URL = "http://localhost:3456";
+      // PBX_PROXY_BASE_URL 由 proxy-config.js 自动设置：
+      // - 本地开发: http://localhost:3456
+      // - 生产环境: /api (相对路径)
       // 使用阿里云百炼平台
       window.PBX_LLM_PROVIDER = "aliyun";
       // 默认模型：qwen-plus（推荐），其他可选：qwen-turbo、qwen-max、qwen-long-context
@@ -879,10 +882,10 @@
         window.PBX_LLM_MODEL,
       );
     </script>
-    <!-- 直接向 localhost:3456 发送对话消息的函数 -->
+    <!-- 通过代理发送对话消息的函数 -->
     <script>
       /**
-       * 直接向 http://localhost:3456 发送对话消息
+       * 通过代理服务器发送对话消息
        * @param {string} userMessage - 用户消息内容
        * @param {Array} [conversationHistory=[]] - 对话历史 [{role, content}, ...]
        * @param {Object} [options={}] - 可选配置
@@ -893,7 +896,8 @@
         conversationHistory = [],
         options = {},
       ) {
-        const endpoint = "http://localhost:3456/v1/chat/completions";
+        const baseUrl = window.PBX_PROXY_BASE_URL || '/api';
+        const endpoint = `${baseUrl}/v1/chat/completions`;
         const model = options.model || window.PBX_LLM_MODEL || "qwen-plus";
         const temperature = options.temperature || 0.7;
         const maxTokens = options.maxTokens || 2048;
@@ -951,7 +955,8 @@
         onChunk,
         options = {},
       ) {
-        const endpoint = "http://localhost:3456/v1/chat/completions";
+        const baseUrl = window.PBX_PROXY_BASE_URL || '/api';
+        const endpoint = `${baseUrl}/v1/chat/completions`;
         const model = options.model || window.PBX_LLM_MODEL || "qwen-plus";
         const temperature = options.temperature || 0.7;
         const maxTokens = options.maxTokens || 2048;