diff --git a/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/SIPRequestHeaderPlarformProvider.java b/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/SIPRequestHeaderPlarformProvider.java
index 57454e60..de32339a 100755
--- a/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/SIPRequestHeaderPlarformProvider.java
+++ b/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/cmd/SIPRequestHeaderPlarformProvider.java
@@ -136,7 +136,7 @@ public class SIPRequestHeaderPlarformProvider {
 				if ("auth".equalsIgnoreCase(qop)) {
 					// 客户端随机数，这是一个不透明的字符串值，由客户端提供，并且客户端和服务器都会使用，以避免用明文文本。
 					// 这使得双方都可以查验对方的身份，并对消息的完整性提供一些保护
-
+					cNonce = UUID.randomUUID().toString();
 
 				}else if ("auth-int".equalsIgnoreCase(qop)){
 					// TODO
@@ -155,6 +155,7 @@ public class SIPRequestHeaderPlarformProvider {
 			reStr.append(nc);
 			reStr.append(":");
 			reStr.append(cNonce);
+
 			reStr.append(":");
 			reStr.append(qop);
 			reStr.append(":");