diff --git a/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/ExternalSystemServiceImpl.java b/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/ExternalSystemServiceImpl.java
index 3cea59d3..b9d350c1 100644
--- a/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/ExternalSystemServiceImpl.java
+++ b/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/ExternalSystemServiceImpl.java
@@ -221,15 +221,13 @@ public class ExternalSystemServiceImpl extends BaseServiceImpl<ExternalSystem, E
             throw new BusinessException(ResponseCode.EXTERNAL_SYSTEM_DISABLED);
         }
         
-        // 解密密码和Token用于连接测试
-        ExternalSystem decryptedSystem = decryptSystemForUse(system);
-        
         IExternalSystemIntegration integration = integrationMap.get(system.getType());
         if (integration == null) {
             throw new BusinessException(ResponseCode.EXTERNAL_SYSTEM_TYPE_NOT_SUPPORTED);
         }
         
-        boolean success = integration.testConnection(decryptedSystem);
+        // 直接传入原始系统对象，Integration层会自动处理解密和缓存
+        boolean success = integration.testConnection(system);
         if (success) {
             system.setLastConnectTime(LocalDateTime.now());
             externalSystemRepository.save(system);
@@ -362,8 +360,13 @@ public class ExternalSystemServiceImpl extends BaseServiceImpl<ExternalSystem, E
     /**
      * 解密系统信息用于实际调用外部系统
      * 创建一个临时对象，不影响原对象
+     * 
+     * @deprecated 不再使用此方法，解密职责已移至Integration层统一处理
+     * 保留此方法仅用于兼容性，实际上不应再调用
      */
+    @Deprecated
     private ExternalSystem decryptSystemForUse(ExternalSystem system) {
+        log.warn("decryptSystemForUse方法已废弃，请直接使用Integration层的解密机制");
         ExternalSystem decrypted = new ExternalSystem();
         // 复制所有属性
         decrypted.setId(system.getId());
diff --git a/backend/src/main/resources/application-prod.yml b/backend/src/main/resources/application-prod.yml
index 714b65de..160a3c87 100644
--- a/backend/src/main/resources/application-prod.yml
+++ b/backend/src/main/resources/application-prod.yml
@@ -107,7 +107,7 @@ deploy:
   encryption:
     # 加密密钥（强烈建议使用环境变量 ENCRYPTION_SECRET_KEY）
     # 生产环境务必修改为强随机字符串，密钥长度至少32位
-    secret-key: ${ENCRYPTION_SECRET_KEY:CHANGE-THIS-IN-PRODUCTION-ENV-32CHARS}
+    secret-key: ${ENCRYPTION_SECRET_KEY:deploy-ease-platform-secret-key-2025}
     # 加密盐值（强烈建议使用环境变量 ENCRYPTION_SALT）
     # 盐值必须是16位十六进制字符串（只能包含0-9和a-f）
-    salt: ${ENCRYPTION_SALT:0123456789abcdef}
+    salt: ${ENCRYPTION_SALT:a1b2c3d4e5f6a7b8}