diff --git a/api/core/tools/tool/api_tool.py b/api/core/tools/tool/api_tool.py
index 0b4c5bd2c6fd73..636debffd46f05 100644
--- a/api/core/tools/tool/api_tool.py
+++ b/api/core/tools/tool/api_tool.py
@@ -270,9 +270,6 @@ def _convert_body_property_type(self, property: dict[str, Any], value: Any) -> A
                 elif property["type"] == "object" or property["type"] == "array":
                     if isinstance(value, str):
                         try:
-                            # an array str like '[1,2]' also can convert to list [1,2] through json.loads
-                            # json not support single quote, but we can support it
-                            value = value.replace("'", '"')
                             return json.loads(value)
                         except ValueError:
                             return value