diff --git a/src/main/java/com/genersoft/iot/vmp/gb28181/SipLayer.java b/src/main/java/com/genersoft/iot/vmp/gb28181/SipLayer.java
index f32bd26a..5cd85d02 100644
--- a/src/main/java/com/genersoft/iot/vmp/gb28181/SipLayer.java
+++ b/src/main/java/com/genersoft/iot/vmp/gb28181/SipLayer.java
@@ -64,6 +64,7 @@ public class SipLayer{
 		 * sip_server_log.log 和 sip_debug_log.log ERROR, INFO, WARNING, OFF, DEBUG, TRACE
 		 */
 		properties.setProperty("gov.nist.javax.sip.TRACE_LEVEL", "ERROR");
+		properties.setProperty("gov.nist.javax.sip.SIP_MESSAGE_VALVE", "com.genersoft.iot.vmp.gb28181.session.SipMessagePreprocessing");
 //		if (logger.isDebugEnabled()) {
 //			properties.setProperty("gov.nist.javax.sip.TRACE_LEVEL", "DEBUG");
 //		}
diff --git a/src/main/java/com/genersoft/iot/vmp/gb28181/session/SipMessagePreprocessing.java b/src/main/java/com/genersoft/iot/vmp/gb28181/session/SipMessagePreprocessing.java
new file mode 100644
index 00000000..c3c12a5c
--- /dev/null
+++ b/src/main/java/com/genersoft/iot/vmp/gb28181/session/SipMessagePreprocessing.java
@@ -0,0 +1,30 @@
+package com.genersoft.iot.vmp.gb28181.session;
+
+import gov.nist.javax.sip.message.SIPRequest;
+import gov.nist.javax.sip.stack.MessageChannel;
+import gov.nist.javax.sip.stack.SIPMessageValve;
+
+import javax.sip.SipStack;
+import javax.sip.message.Response;
+
+public class SipMessagePreprocessing implements SIPMessageValve {
+    @Override
+    public boolean processRequest(SIPRequest sipRequest, MessageChannel messageChannel) {
+        return false;
+    }
+
+    @Override
+    public boolean processResponse(Response response, MessageChannel messageChannel) {
+        return false;
+    }
+
+    @Override
+    public void init(SipStack sipStack) {
+
+    }
+
+    @Override
+    public void destroy() {
+
+    }
+}