diff --git a/2022.03.16_frequently_used_python_package/json_example.py b/2022.03.16_frequently_used_python_package/json_example.py
new file mode 100644
index 0000000..6e8eb02
--- /dev/null
+++ b/2022.03.16_frequently_used_python_package/json_example.py
@@ -0,0 +1,25 @@
+import json
+
+# 定义一个字典对象
+data = {
+    "name": "张三",
+    "age": 30,
+    "city": "北京"
+}
+
+print(type(data))
+print(data.items())
+for key, value in data.items():
+    print(f'{key}: {value}')
+print()
+
+# 将字典对象转换为JSON格式
+json_data = json.dumps(data)
+print(type(json_data))
+print("JSON格式数据：", json_data)
+print()
+
+# 将JSON格式数据转换回字典对象
+dict_data = json.loads(json_data)
+print(type(dict_data))
+print("字典对象：", dict_data)
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