diff --git a/.env.example b/.env.example
index 704d0a8a..91155d64 100644
--- a/.env.example
+++ b/.env.example
@@ -61,6 +61,9 @@ PROXY_USE_IPV4=true
 # ⏱️ 请求超时配置
 REQUEST_TIMEOUT=600000  # 请求超时设置（毫秒），默认10分钟
 
+# 🔧 请求体大小配置
+REQUEST_MAX_SIZE_MB=60
+
 # 📈 使用限制
 DEFAULT_TOKEN_LIMIT=1000000
 
diff --git a/docker-compose.yml b/docker-compose.yml
index 79b9afb8..d8f78a24 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -21,6 +21,9 @@ services:
       - PORT=3000
       - HOST=0.0.0.0
       
+      # 🔧 请求体大小配置
+      - REQUEST_MAX_SIZE_MB=60
+      
       # 🔐 安全配置（必填）
       - JWT_SECRET=${JWT_SECRET}  # 必填：至少32字符的随机字符串
       - ENCRYPTION_KEY=${ENCRYPTION_KEY}  # 必填：32字符的加密密钥
diff --git a/src/middleware/auth.js b/src/middleware/auth.js
index a5568323..e5a449b6 100644
--- a/src/middleware/auth.js
+++ b/src/middleware/auth.js
@@ -1388,7 +1388,8 @@ const globalRateLimit = async (req, res, next) =>
 
 // 📊 请求大小限制中间件
 const requestSizeLimit = (req, res, next) => {
-  const maxSize = 60 * 1024 * 1024 // 60MB
+  const MAX_SIZE_MB = parseInt(process.env.REQUEST_MAX_SIZE_MB || '60', 10)
+  const maxSize = MAX_SIZE_MB * 1024 * 1024
   const contentLength = parseInt(req.headers['content-length'] || '0')
 
   if (contentLength > maxSize) {