diff --git a/polaris-discovery/polaris-discovery-client/src/main/java/com/tencent/polaris/discovery/client/flow/RegisterStateManager.java b/polaris-discovery/polaris-discovery-client/src/main/java/com/tencent/polaris/discovery/client/flow/RegisterStateManager.java
index 97e26096..afc3582c 100644
--- a/polaris-discovery/polaris-discovery-client/src/main/java/com/tencent/polaris/discovery/client/flow/RegisterStateManager.java
+++ b/polaris-discovery/polaris-discovery-client/src/main/java/com/tencent/polaris/discovery/client/flow/RegisterStateManager.java
@@ -21,6 +21,7 @@
 import com.tencent.polaris.api.rpc.InstanceDeregisterRequest;
 import com.tencent.polaris.api.rpc.InstanceRegisterRequest;
 import com.tencent.polaris.client.api.SDKContext;
+
 import java.util.Map;
 import java.util.Optional;
 import java.util.concurrent.ConcurrentHashMap;
@@ -47,7 +48,9 @@ public static RegisterState putRegisterState(SDKContext sdkContext,
         String registerStateKey = buildRegisterStateKey(instanceRegisterRequest);
         Map<String, RegisterState> sdkRegisterStates = REGISTER_STATES.computeIfAbsent(
                 sdkContext.getValueContext().getClientId(), clientId -> new ConcurrentHashMap<>());
-        if (sdkRegisterStates.containsKey(registerStateKey)) {
+        RegisterState existsRegisterState = sdkRegisterStates.get(registerStateKey);
+        if (existsRegisterState != null) {
+             existsRegisterState.setInstanceRegisterRequest(instanceRegisterRequest);
             return null;
         }
         return sdkRegisterStates.computeIfAbsent(registerStateKey, unused -> {
@@ -90,7 +93,7 @@ private static String buildRegisterStateKey(CommonProviderBaseEntity baseEntity)
 
     public static final class RegisterState {
 
-        private InstanceRegisterRequest instanceRegisterRequest;
+        private volatile InstanceRegisterRequest instanceRegisterRequest;
         private long firstRegisterTime;
         private ScheduledFuture<?> taskFuture;
         private int heartbeatFailCounter = 0;