diff --git a/apps/application/flow/step_node/mcp_node/impl/base_mcp_node.py b/apps/application/flow/step_node/mcp_node/impl/base_mcp_node.py
index d4a046cc9..8fed9983e 100644
--- a/apps/application/flow/step_node/mcp_node/impl/base_mcp_node.py
+++ b/apps/application/flow/step_node/mcp_node/impl/base_mcp_node.py
@@ -57,9 +57,9 @@ class BaseMcpNode(IMcpNode):
         return tool_params
 
     def get_reference_content(self, fields: List[str]):
-        return str(self.workflow_manage.get_reference_field(
+        return self.workflow_manage.get_reference_field(
             fields[0],
-            fields[1:]))
+            fields[1:])
 
     def get_details(self, index: int, **kwargs):
         return {