diff --git a/python/core/component.py b/python/core/component.py
index 9a37c195..4254bbef 100644
--- a/python/core/component.py
+++ b/python/core/component.py
@@ -127,7 +127,7 @@ class FunctionCall(BaseModel, extra='allow'):
     arguments: dict = Field(default={}, description="参数列表")
     
 class Json(BaseModel, extra='allow'):
-    data: dict = Field(default="", description="json数据")
+    data: str = Field(default="", description="json数据")
 
 class Content(BaseModel):
     name: str = Field(default="",
@@ -517,6 +517,8 @@ def create_output(cls, type, text, role="tool", name="", visible_scope="all", ra
                 text = {"url": text}
             elif type == "oral_text":
                 text = {"info": text}
+            elif type == "json":
+                text = {"data": text}
             else:
                 raise ValueError("Only when type=text/code/urls/oral_text, string text is allowed! Please give dict text")
         elif isinstance(text, dict):
@@ -542,8 +544,6 @@ def create_output(cls, type, text, role="tool", name="", visible_scope="all", ra
                 key_list = ["detail", "steps"]
             elif type == "function_call":
                 key_list = ["thought", "name", "arguments"]
-            elif type == "json":
-                key_list = ["data"]
             else:
                 raise ValueError("Unknown type: {}".format(type))
             # assert all(key in text for key in key_list), "all keys:{} must be included in the text field".format(key_list)
diff --git a/python/tests/test_core_components.py b/python/tests/test_core_components.py
new file mode 100644
index 00000000..ebeb1544
--- /dev/null
+++ b/python/tests/test_core_components.py
@@ -0,0 +1,38 @@
+# Copyright (c) 2024 Baidu, Inc. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+import os
+import json
+import unittest
+
+from appbuilder.core.component import Component
+
+
+@unittest.skipUnless(os.getenv("TEST_CASE", "UNKNOWN") == "CPU_PARALLEL", "")
+class TestObjectRecognition(unittest.TestCase):
+    def setUp(self):
+        self.com = Component()
+        self.json = json.dumps({
+            "type": "object_recognition",
+            "text": "https://baidu.com/1.jpg",
+        })
+
+    def test_create_output(self):
+        result = self.com.create_output(
+            type="json",
+            text=self.json,
+        )
+        print(result)
+
+if __name__ == '__main__':
+    unittest.main()
\ No newline at end of file