diff --git a/joylive-plugin/joylive-router/joylive-router-grpc/src/main/java/com/jd/live/agent/plugin/router/gprc/loadbalance/LivePickerAdvice.java b/joylive-plugin/joylive-router/joylive-router-grpc/src/main/java/com/jd/live/agent/plugin/router/gprc/loadbalance/LivePickerAdvice.java
index 48d1d07c..e4b0c17a 100644
--- a/joylive-plugin/joylive-router/joylive-router-grpc/src/main/java/com/jd/live/agent/plugin/router/gprc/loadbalance/LivePickerAdvice.java
+++ b/joylive-plugin/joylive-router/joylive-router-grpc/src/main/java/com/jd/live/agent/plugin/router/gprc/loadbalance/LivePickerAdvice.java
@@ -20,11 +20,14 @@
 import java.util.List;
 import java.util.function.Function;
 
+/**
+ * Represents advice for live picker, which includes a subchannel and an election function to determine the active subchannel.
+ */
 public class LivePickerAdvice {
 
     public static final CallOptions.Key<LivePickerAdvice> KEY_PICKER_ADVICE = CallOptions.Key.create("x-picker-advice");
 
-    private final LiveSubchannel subchannel;
+    private LiveSubchannel subchannel;
 
     private final Function<List<LiveSubchannel>, LiveSubchannel> election;
 
@@ -45,6 +48,10 @@ public LiveSubchannel getSubchannel() {
         return subchannel;
     }
 
+    public void setSubchannel(LiveSubchannel subchannel) {
+        this.subchannel = subchannel;
+    }
+
     public Function<List<LiveSubchannel>, LiveSubchannel> getElection() {
         return election;
     }