diff --git a/backend/src/main/java/com/designhub/service/ThirdPartyDbService.java b/backend/src/main/java/com/designhub/service/ThirdPartyDbService.java
index f681354..0906d97 100644
--- a/backend/src/main/java/com/designhub/service/ThirdPartyDbService.java
+++ b/backend/src/main/java/com/designhub/service/ThirdPartyDbService.java
@@ -24,6 +24,21 @@ import java.util.Map;
 public class ThirdPartyDbService {
 
     private final ThirdPartyDbConfigMapper configMapper;
+    
+    // 静态初始化块：移除 TLS 协议限制，以支持旧版 SQL Server
+    static {
+        try {
+            // 移除 TLS 1.0 和 TLS 1.1 的禁用限制
+            java.security.Security.setProperty("jdk.tls.disabledAlgorithms", 
+                "SSLv3, RC4, DES, MD5withRSA, DH keySize < 1024, EC keySize < 224, 3DES_EDE_CBC, anon, NULL");
+            // 设置允许的 TLS 协议
+            System.setProperty("jdk.tls.client.protocols", "TLSv1,TLSv1.1,TLSv1.2");
+            System.setProperty("https.protocols", "TLSv1,TLSv1.1,TLSv1.2");
+            log.info("已移除 TLS 协议限制，支持 TLSv1/TLSv1.1/TLSv1.2");
+        } catch (Exception e) {
+            log.warn("移除 TLS 限制失败: {}", e.getMessage());
+        }
+    }
 
     /**
      * 获取所有配置