diff --git a/api/services/tools_manage_service.py b/api/services/tools_manage_service.py
index a866cbb4f9..e6348f6ca8 100644
--- a/api/services/tools_manage_service.py
+++ b/api/services/tools_manage_service.py
@@ -313,25 +313,33 @@ class ToolManageService:
         """
             update builtin tool provider
         """
+        # get if the provider exists
+        provider: BuiltinToolProvider = db.session.query(BuiltinToolProvider).filter(
+            BuiltinToolProvider.tenant_id == tenant_id,
+            BuiltinToolProvider.provider == provider_name,
+        ).first()
+
         try: 
             # get provider
             provider_controller = ToolManager.get_builtin_provider(provider_name)
             if not provider_controller.need_credentials:
                 raise ValueError(f'provider {provider_name} does not need credentials')
+            tool_configuration = ToolConfiguration(tenant_id=tenant_id, provider_controller=provider_controller)
+            # get original credentials if exists
+            if provider is not None:
+                original_credentials = tool_configuration.decrypt_tool_credentials(provider.credentials)
+                masked_credentials = tool_configuration.mask_tool_credentials(original_credentials)
+                # check if the credential has changed, save the original credential
+                for name, value in credentials.items():
+                    if name in masked_credentials and value == masked_credentials[name]:
+                        credentials[name] = original_credentials[name]
             # validate credentials
             provider_controller.validate_credentials(credentials)
             # encrypt credentials
-            tool_configuration = ToolConfiguration(tenant_id=tenant_id, provider_controller=provider_controller)
             credentials = tool_configuration.encrypt_tool_credentials(credentials)
         except (ToolProviderNotFoundError, ToolNotFoundError, ToolProviderCredentialValidationError) as e:
             raise ValueError(str(e))
 
-        # get if the provider exists
-        provider: BuiltinToolProvider = db.session.query(BuiltinToolProvider).filter(
-            BuiltinToolProvider.tenant_id == tenant_id,
-            BuiltinToolProvider.provider == provider_name,
-        ).first()
-
         if provider is None:
             # create provider
             provider = BuiltinToolProvider(