diff --git a/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/response/impl/InviteResponseProcessor.java b/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/response/impl/InviteResponseProcessor.java
index 3a01c65e..27142ab0 100755
--- a/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/response/impl/InviteResponseProcessor.java
+++ b/src/main/java/com/genersoft/iot/vmp/gb28181/transmit/event/response/impl/InviteResponseProcessor.java
@@ -136,6 +136,7 @@ public class InviteResponseProcessor extends SIPResponseProcessorAbstract {
 
 				ScheduledFuture<?> schedule = scheduledExecutorService.schedule(() -> {
 					try {
+						sipSubscribe.removeOkSubscribe("ACK_DEVICE_" + id);
 						logger.info("[回复ack] {}-> {}:{} ", sdp.getOrigin().getUsername(), event.getRemoteIpAddress(), event.getRemotePort());
 						sipSender.transmitRequest(response.getLocalAddress().getHostAddress(), reqAck);
 					} catch (SdpParseException | ParseException | SipException e) {