diff --git a/nginx/nginx.conf b/nginx/nginx.conf
index dfbb1ef..71be6f0 100644
--- a/nginx/nginx.conf
+++ b/nginx/nginx.conf
@@ -139,6 +139,18 @@ http {
                     ngx.req.read_body()
                     local body = ngx.req.get_body_data()
                     
+                    -- 如果 body 为空，可能是因为请求体被写入了临时文件
+                    if not body then
+                        local body_file = ngx.req.get_body_file()
+                        if body_file then
+                            local file = io.open(body_file, "r")
+                            if file then
+                                body = file:read("*all")
+                                file:close()
+                            end
+                        end
+                    end
+                    
                     if not body then
                         ngx.status = 400
                         ngx.say(cjson.encode({error = "Empty body"}))