diff --git a/backend/src/main/java/com/designhub/service/ThirdPartyDbService.java b/backend/src/main/java/com/designhub/service/ThirdPartyDbService.java
index a117970..ab65ee8 100644
--- a/backend/src/main/java/com/designhub/service/ThirdPartyDbService.java
+++ b/backend/src/main/java/com/designhub/service/ThirdPartyDbService.java
@@ -108,8 +108,11 @@ public class ThirdPartyDbService {
         switch (config.getDbType().toLowerCase()) {
             case "sqlserver":
                 driverClass = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
-                url = String.format("jdbc:sqlserver://%s:%d;databaseName=%s;encrypt=false;trustServerCertificate=true",
+                // 完全禁用SSL加密以支持旧版SQL Server
+                url = String.format("jdbc:sqlserver://%s:%d;databaseName=%s;encrypt=false;trustServerCertificate=true;integratedSecurity=false",
                     config.getHost(), config.getPort(), config.getDatabase());
+                // 启用TLS 1.0支持（针对旧版SQL Server）
+                System.setProperty("jdk.tls.client.protocols", "TLSv1,TLSv1.1,TLSv1.2,TLSv1.3");
                 break;
             case "mysql":
                 driverClass = "com.mysql.cj.jdbc.Driver";