diff --git a/sys/shkd-sys-sys/src/main/java/shkd/sys/sys/midservice/utils/RequestClient.java b/sys/shkd-sys-sys/src/main/java/shkd/sys/sys/midservice/utils/RequestClient.java
index 1cf75b4..1e3669c 100644
--- a/sys/shkd-sys-sys/src/main/java/shkd/sys/sys/midservice/utils/RequestClient.java
+++ b/sys/shkd-sys-sys/src/main/java/shkd/sys/sys/midservice/utils/RequestClient.java
@@ -78,7 +78,7 @@ public class RequestClient {
     private Map<String, String> getHeaders(){
         Map<String,String> header=new HashMap<>();
         String timestamp = Long.toString(System.currentTimeMillis() / 1000);
-        byte[] securityKey = this.clientKey.substring(10, 26).getBytes();
+        byte[] securityKey = this.clientSecret.substring(10, 26).getBytes();
         String authenticationCode = SmUtil.sm4(securityKey).encryptHex(clientKey + clientSecret + timestamp);
         header.put("authen", authenticationCode);
         header.put("clientKey", clientKey);