diff --git a/internal/rootcoord/proxy_manager.go b/internal/rootcoord/proxy_manager.go
index 83eb7ef1b1..46989b4d9c 100644
--- a/internal/rootcoord/proxy_manager.go
+++ b/internal/rootcoord/proxy_manager.go
@@ -101,8 +101,6 @@ func (p *proxyManager) WatchProxy() error {
 		}
 		for _, s := range sessions {
 			metrics.RootCoordProxyLister.WithLabelValues(metricProxy(s.ServerID)).Set(1)
-		}
-		for _, s := range sessions {
 			log.Debug("Get proxy", zap.Int64("id", s.ServerID), zap.String("addr", s.Address), zap.String("name", s.ServerName))
 		}
 
@@ -140,6 +138,7 @@ func (p *proxyManager) WatchProxy() error {
 							}
 						}
 						p.lock.Lock()
+						log.Debug("watchProxy detect PUT event", zap.Int64("serverID", sess.ServerID))
 						for _, f := range p.addSessions {
 							f(sess)
 						}
@@ -153,6 +152,7 @@ func (p *proxyManager) WatchProxy() error {
 							continue
 						}
 						p.lock.Lock()
+						log.Debug("watchProxy detect DELETE event", zap.Int64("serverID", sess.ServerID))
 						for _, f := range p.delSessions {
 							f(sess)
 						}
diff --git a/internal/rootcoord/timeticksync.go b/internal/rootcoord/timeticksync.go
index 7da158c40c..e5b827dd20 100644
--- a/internal/rootcoord/timeticksync.go
+++ b/internal/rootcoord/timeticksync.go
@@ -197,6 +197,7 @@ func (t *timetickSync) AddProxy(sess *sessionutil.Session) {
 	t.lock.Lock()
 	defer t.lock.Unlock()
 	t.proxyTimeTick[sess.ServerID] = nil
+	log.Debug("Add proxy for timeticksync", zap.Int64("serverID", sess.ServerID))
 }
 
 func (t *timetickSync) DelProxy(sess *sessionutil.Session) {
@@ -204,6 +205,7 @@ func (t *timetickSync) DelProxy(sess *sessionutil.Session) {
 	defer t.lock.Unlock()
 	if _, ok := t.proxyTimeTick[sess.ServerID]; ok {
 		delete(t.proxyTimeTick, sess.ServerID)
+		log.Debug("Remove proxy from timeticksync", zap.Int64("serverID", sess.ServerID))
 		t.sendToChannel()
 	}
 }