diff --git a/jsowell-common/src/main/java/com/jsowell/common/core/domain/parking/ParkingCommonParam.java b/jsowell-common/src/main/java/com/jsowell/common/core/domain/parking/ParkingCommonParam.java
new file mode 100644
index 000000000..b1f142d08
--- /dev/null
+++ b/jsowell-common/src/main/java/com/jsowell/common/core/domain/parking/ParkingCommonParam.java
@@ -0,0 +1,41 @@
+package com.jsowell.common.core.domain.parking;
+
+import lombok.Data;
+
+import java.util.Map;
+
+/**
+ * 停车场公告参数
+ */
+@Data
+public class ParkingCommonParam {
+    /**
+     * 服务名称
+     */
+    private String service;
+
+    /**
+     * 版本
+     */
+    private String version;
+
+    /**
+     * 消息ID（唯一）
+     */
+    private String msgId;
+
+    /**
+     * 机构ID（分配）
+     */
+    private String orgId;
+
+    /**
+     * 具体业务接口json对象
+     */
+    private Map<String, String> data;
+
+    /**
+     * 请求签名
+     */
+    private String sign;
+}
diff --git a/jsowell-common/src/main/java/com/jsowell/common/util/ParkingUtil.java b/jsowell-common/src/main/java/com/jsowell/common/util/ParkingUtil.java
new file mode 100644
index 000000000..bb43808b8
--- /dev/null
+++ b/jsowell-common/src/main/java/com/jsowell/common/util/ParkingUtil.java
@@ -0,0 +1,70 @@
+package com.jsowell.common.util;
+
+import com.jsowell.common.util.sign.MD5Util;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * 停车平台工具类
+ */
+public class ParkingUtil {
+
+    /**
+     * 计算sign
+     */
+    public static String generateSign(Map<String, String> publicParams, Map<String, String> businessParams, String secretKey) {
+        // Step 1: 过滤空值并按照ASCII码排序公共参数
+        StringBuilder stringA = new StringBuilder();
+        publicParams.entrySet().stream()
+                .filter(entry -> entry.getValue() != null && !entry.getValue().isEmpty())
+                .sorted(Map.Entry.comparingByKey())
+                .forEach(entry -> stringA.append(entry.getKey()).append("=").append(entry.getValue()).append("|"));
+
+        // 去除最后的“|”符号
+        // if (stringA.length() > 0) {
+        //     stringA.deleteCharAt(stringA.length() - 1);
+        // }
+
+        // Step 2: 过滤空值并按照ASCII码排序业务参数
+        StringBuilder stringB = new StringBuilder();
+        businessParams.entrySet().stream()
+                .filter(entry -> entry.getValue() != null && !entry.getValue().isEmpty())
+                .sorted(Map.Entry.comparingByKey())
+                .forEach(entry -> stringB.append(entry.getKey()).append("=").append(entry.getValue()).append("|"));
+
+        // 去除最后的“|”符号
+        // if (stringB.length() > 0) {
+        //     stringB.deleteCharAt(stringB.length() - 1);
+        // }
+
+        // Step 3: 拼接字符串A、B和机构密钥
+        String stringC = stringA.toString() + stringB.toString() + secretKey;
+
+        // Step 4: 对字符串C进行MD5加密并返回小写的签名
+        return MD5Util.MD5Encode(stringC).toLowerCase();
+    }
+
+    public static void main(String[] args) {
+        // 模拟公共请求参数
+        Map<String, String> publicParams = new HashMap<>();
+        publicParams.put("service", "getOwner");
+        publicParams.put("version", "01");
+        publicParams.put("msgId", "f719b06d-210b-4989-9c7f-02e85f22fe01");
+        publicParams.put("orgId", "BTTEST01");
+
+        // 模拟业务请求参数
+        Map<String, String> businessParams = new HashMap<>();
+        businessParams.put("parkId", "11609");
+        businessParams.put("phone", "13148762240");
+        businessParams.put("name", "pasika");
+        businessParams.put("address", "测试");
+
+        // 机构密钥
+        String secretKey = "K9OGNA7CIY8N5GXD8HF3WVDMEZNFKL3F";
+
+        // 计算签名
+        String sign = generateSign(publicParams, businessParams, secretKey);
+        System.out.println("Generated Sign: " + sign);
+    }
+}