diff --git a/pkg/scheduler/scheduler.go b/pkg/scheduler/scheduler.go
index 116c0425c..f315e80d7 100644
--- a/pkg/scheduler/scheduler.go
+++ b/pkg/scheduler/scheduler.go
@@ -70,7 +70,7 @@ func NewScheduler() *Scheduler {
 	}
 	s.nodeManager = newNodeManager()
 	s.podManager = newPodManager()
-	klog.V(2).InfoS("Scheduler initialized successfully")
+	klog.InfoS("Scheduler initialized successfully")
 	return s
 }
 
@@ -87,7 +87,7 @@ func (s *Scheduler) onAddPod(obj any) {
 		klog.ErrorS(fmt.Errorf("invalid pod object"), "Failed to process pod addition")
 		return
 	}
-	klog.V(5).InfoS("Pod added", "pod", pod.Name, "namespace", pod.Namespace)
+	klog.V(4).InfoS("Pod added", "pod", pod.Name, "namespace", pod.Namespace)
 	nodeID, ok := pod.Annotations[util.AssignedNodeAnnotations]
 	if !ok {
 		return
@@ -107,7 +107,7 @@ func (s *Scheduler) onUpdatePod(_, newObj any) {
 func (s *Scheduler) onDelPod(obj any) {
 	pod, ok := obj.(*corev1.Pod)
 	if !ok {
-		klog.Errorf("unknown add object type")
+		klog.ErrorS(fmt.Errorf("unknown object type"), "Failed to process pod deletion")
 		return
 	}
 	_, ok = pod.Annotations[util.AssignedNodeAnnotations]
@@ -156,9 +156,9 @@ func (s *Scheduler) RegisterFromNodeAnnotations() {
 	for {
 		select {
 		case <-s.nodeNotify:
-			klog.V(5).InfoS("Received node notification")
+			klog.V(4).InfoS("Received node notification")
 		case <-ticker.C:
-			klog.InfoS("Ticker triggered")
+			klog.V(5).InfoS("Ticker triggered")
 		case <-s.stopCh:
 			klog.InfoS("Received stop signal, exiting RegisterFromNodeAnnotations")
 			return
@@ -168,26 +168,36 @@ func (s *Scheduler) RegisterFromNodeAnnotations() {
 			klog.ErrorS(err, "Failed to list nodes with selector", "selector", labelSelector.String())
 			continue
 		}
-		klog.V(5).InfoS("Listed nodes", "nodeCount", len(rawNodes))
+
+		klog.V(4).InfoS("Listed nodes", "nodeCount", len(rawNodes))
 		var nodeNames []string
 		for _, val := range rawNodes {
 			nodeNames = append(nodeNames, val.Name)
-			klog.V(5).InfoS("Processing node", "nodeName", val.Name)
+
+			klog.V(4).InfoS("Processing node", "nodeName", val.Name)
 
 			for devhandsk, devInstance := range device.GetDevices() {
-				klog.V(5).InfoS("Checking device health", "nodeName", val.Name, "deviceVendor", devhandsk)
+
+				klog.V(4).InfoS("Checking device health", "nodeName", val.Name, "deviceVendor", devhandsk)
 
 				nodedevices, err := devInstance.GetNodeDevices(*val)
 				if err != nil {
-					klog.V(5).InfoS("Failed to get node devices", "nodeName", val.Name, "deviceVendor", devhandsk)
-					continue
+					klog.V(3).InfoS("Failed to update node device status", "nodeName", val.Name, "deviceVendor", devhandsk, "error", err)
 				}
 
 				health, needUpdate := devInstance.CheckHealth(devhandsk, val)
-				klog.V(5).InfoS("Device health check result", "nodeName", val.Name, "deviceVendor", devhandsk, "health", health, "needUpdate", needUpdate)
+
+				klog.V(4).InfoS("Device health check result",
+					"nodeName", val.Name,
+					"deviceVendor", devhandsk,
+					"health", health,
+					"needUpdate", needUpdate)
 
 				if !health {
-					klog.Warning("Device is unhealthy, cleaning up node", "nodeName", val.Name, "deviceVendor", devhandsk)
+
+					klog.Warning("Device is unhealthy, cleaning up node",
+						"nodeName", val.Name,
+						"deviceVendor", devhandsk)
 					err := devInstance.NodeCleanUp(val.Name)
 					if err != nil {
 						klog.ErrorS(err, "Node cleanup failed", "nodeName", val.Name, "deviceVendor", devhandsk)
@@ -197,20 +207,23 @@ func (s *Scheduler) RegisterFromNodeAnnotations() {
 					continue
 				}
 				if !needUpdate {
-					klog.V(5).InfoS("No update needed for device", "nodeName", val.Name, "deviceVendor", devhandsk)
+					klog.V(4).InfoS("No update needed for device", "nodeName", val.Name, "deviceVendor", devhandsk)
 					continue
 				}
 				_, ok := util.HandshakeAnnos[devhandsk]
 				if ok {
 					tmppat := make(map[string]string)
 					tmppat[util.HandshakeAnnos[devhandsk]] = "Requesting_" + time.Now().Format(time.DateTime)
-					klog.InfoS("New timestamp for annotation", "nodeName", val.Name, "annotationKey", util.HandshakeAnnos[devhandsk], "annotationValue", tmppat[util.HandshakeAnnos[devhandsk]])
+					klog.V(3).InfoS("New timestamp for annotation",
+						"nodeName", val.Name,
+						"annotationKey", util.HandshakeAnnos[devhandsk],
+						"annotationValue", tmppat[util.HandshakeAnnos[devhandsk]])
 					n, err := util.GetNode(val.Name)
 					if err != nil {
 						klog.ErrorS(err, "Failed to get node", "nodeName", val.Name)
 						continue
 					}
-					klog.V(5).InfoS("Patching node annotations", "nodeName", val.Name, "annotations", tmppat)
+					klog.V(4).InfoS("Patching node annotations", "nodeName", val.Name, "annotations", tmppat)
 					if err := util.PatchNodeAnnotations(n, tmppat); err != nil {
 						klog.ErrorS(err, "Failed to patch node annotations", "nodeName", val.Name)
 					}
@@ -218,7 +231,7 @@ func (s *Scheduler) RegisterFromNodeAnnotations() {
 				nodeInfo := &util.NodeInfo{}
 				nodeInfo.ID = val.Name
 				nodeInfo.Node = val
-				klog.V(5).InfoS("Fetching node devices", "nodeName", val.Name, "deviceVendor", devhandsk)
+				klog.V(4).InfoS("Fetching node devices", "nodeName", val.Name, "deviceVendor", devhandsk)
 				nodeInfo.Devices = make([]util.DeviceInfo, 0)
 				for _, deviceinfo := range nodedevices {
 					nodeInfo.Devices = append(nodeInfo.Devices, *deviceinfo)
@@ -226,11 +239,15 @@ func (s *Scheduler) RegisterFromNodeAnnotations() {
 				s.addNode(val.Name, nodeInfo)
 				if s.nodes[val.Name] != nil && len(nodeInfo.Devices) > 0 {
 					if printedLog[val.Name] {
-						klog.V(5).InfoS("Node device updated", "nodeName", val.Name, "deviceVendor", devhandsk, "nodeInfo", nodeInfo, "totalDevices", s.nodes[val.Name].Devices)
+						klog.InfoS("Node device updated", "nodeName", val.Name, "deviceVendor", devhandsk, "nodeInfo", nodeInfo, "totalDevices", s.nodes[val.Name].Devices)
 					} else {
 						klog.InfoS("Node device added", "nodeName", val.Name, "deviceVendor", devhandsk, "nodeInfo", nodeInfo, "totalDevices", s.nodes[val.Name].Devices)
 						printedLog[val.Name] = true
 					}
+					klog.InfoS("Node device inventory changed",
+						"nodeName", val.Name,
+						"deviceVendor", devhandsk,
+						"deviceCount", len(nodeInfo.Devices))
 				}
 			}
 		}
@@ -319,7 +336,10 @@ func (s *Scheduler) getNodesUsage(nodes *[]string, task *corev1.Pod) (*map[strin
 							d.Device.Usedcores += udevice.Usedcores
 							if strings.Contains(udevice.UUID, "[") {
 								if strings.Compare(d.Device.Mode, "hami-core") == 0 {
-									klog.Errorf("found a mig task running on a hami-core GPU\n")
+									klog.ErrorS(fmt.Errorf("invalid configuration"), "MIG task assigned to non-MIG GPU",
+										"deviceID", d.Device.ID,
+										"deviceMode", d.Device.Mode,
+										"taskUUID", udevice.UUID)
 									d.Device.Health = false
 									continue
 								}
@@ -328,21 +348,28 @@ func (s *Scheduler) getNodesUsage(nodes *[]string, task *corev1.Pod) (*map[strin
 									util.PlatternMIG(&d.Device.MigUsage, d.Device.MigTemplate, tmpIdx)
 								}
 								d.Device.MigUsage.UsageList[Instance].InUse = true
-								klog.V(5).Infoln("add mig usage", d.Device.MigUsage, "template=", d.Device.MigTemplate, "uuid=", d.Device.ID)
+								klog.V(4).InfoS("MIG device allocated",
+									"deviceID", d.Device.ID,
+									"instanceID", Instance,
+									"template", d.Device.MigTemplate)
 							}
 						}
 					}
 				}
 			}
 		}
-		klog.V(5).Infof("usage: pod %v assigned %v %v", p.Name, p.NodeID, p.Devices)
+		klog.V(4).InfoS("Pod resource assignment",
+			"podName", p.Name,
+			"nodeName", p.NodeID,
+			"deviceCount", len(p.Devices))
 	}
 	s.overviewstatus = overallnodeMap
 	for _, nodeID := range *nodes {
 		node, err := s.GetNode(nodeID)
 		if err != nil {
-			// The identified node does not have a gpu device, so the log here has no practical meaning,increase log priority.
-			klog.V(5).InfoS("node unregistered", "node", nodeID, "error", err)
+			klog.V(3).InfoS("Node unregistered or no GPU devices found",
+				"nodeName", nodeID,
+				"error", err)
 			failedNodes[nodeID] = "node unregistered"
 			continue
 		}
@@ -396,7 +423,7 @@ func (s *Scheduler) Bind(args extenderv1.ExtenderBindingArgs) (*extenderv1.Exten
 		klog.ErrorS(err, "Failed to get pod", "pod", args.PodName, "namespace", args.PodNamespace)
 		return &extenderv1.ExtenderBindingResult{Error: err.Error()}, err
 	}
-	klog.InfoS("Trying to get the target node for pod", "pod", args.PodName, "namespace", args.PodNamespace, "node", args.Node)
+	klog.V(3).InfoS("Retrieving target node for binding", "pod", args.PodName, "namespace", args.PodNamespace, "node", args.Node)
 	node, err := s.kubeClient.CoreV1().Nodes().Get(context.Background(), args.Node, metav1.GetOptions{})
 	if err != nil {
 		klog.ErrorS(err, "Failed to get node", "node", args.Node)
@@ -413,14 +440,14 @@ func (s *Scheduler) Bind(args extenderv1.ExtenderBindingArgs) (*extenderv1.Exten
 	for _, val := range device.GetDevices() {
 		err = val.LockNode(node, current)
 		if err != nil {
-			klog.ErrorS(err, "Failed to lock node", "node", args.Node, "device", val)
+			klog.ErrorS(err, "Failed to lock node", "node", args.Node, "error", err)
 			goto ReleaseNodeLocks
 		}
 	}
 
 	err = util.PatchPodAnnotations(current, tmppatch)
 	if err != nil {
-		klog.ErrorS(err, "Failed to patch pod annotations", "pod", klog.KObj(current))
+		klog.ErrorS(err, "Failed to patch pod annotations", "pod", klog.KObj(current), "annotations", tmppatch)
 		return &extenderv1.ExtenderBindingResult{Error: err.Error()}, err
 	}
 
@@ -453,8 +480,10 @@ func (s *Scheduler) Filter(args extenderv1.ExtenderArgs) (*extenderv1.ExtenderFi
 		}
 	}
 	if total == 0 {
-		klog.V(1).InfoS("Pod does not request any resources",
-			"pod", args.Pod.Name)
+		klog.InfoS("Pod does not request any resources",
+			"podName", args.Pod.Name,
+			"podNamespace", args.Pod.Namespace,
+			"podUID", args.Pod.UID)
 		s.recordScheduleFilterResultEvent(args.Pod, EventReasonFilteringFailed, "", fmt.Errorf("does not request any resource"))
 		return &extenderv1.ExtenderFilterResult{
 			NodeNames:   args.NodeNames,
@@ -470,8 +499,9 @@ func (s *Scheduler) Filter(args extenderv1.ExtenderArgs) (*extenderv1.ExtenderFi
 		return nil, err
 	}
 	if len(failedNodes) != 0 {
-		klog.V(5).InfoS("Nodes failed during usage retrieval",
-			"nodes", failedNodes)
+		klog.InfoS("Failed to retrieve usage for some nodes",
+			"failedNodeCount", len(failedNodes),
+			"failedNodes", failedNodes)
 	}
 	nodeScores, err := s.calcScore(nodeUsage, nums, annos, args.Pod, failedNodes)
 	if err != nil {
@@ -480,14 +510,18 @@ func (s *Scheduler) Filter(args extenderv1.ExtenderArgs) (*extenderv1.ExtenderFi
 		return nil, err
 	}
 	if len((*nodeScores).NodeList) == 0 {
-		klog.V(4).InfoS("No available nodes meet the required scores",
-			"pod", args.Pod.Name)
+		klog.InfoS("No available nodes meet the required scores",
+			"podName", args.Pod.Name,
+			"podNamespace", args.Pod.Namespace,
+			"requestedResources", k8sutil.Resourcereqs(args.Pod),
+			"totalNodesChecked", len(*args.NodeNames),
+			"failedNodesCount", len(failedNodes))
 		s.recordScheduleFilterResultEvent(args.Pod, EventReasonFilteringFailed, "", fmt.Errorf("no available node, %d nodes do not meet", len(*args.NodeNames)))
 		return &extenderv1.ExtenderFilterResult{
 			FailedNodes: failedNodes,
 		}, nil
 	}
-	klog.V(4).Infoln("nodeScores_len=", len((*nodeScores).NodeList))
+	klog.InfoS("Calculated node scores", "pod", args.Pod.Name, "nodeScoresLen", len(nodeScores.NodeList))
 	sort.Sort(nodeScores)
 	m := (*nodeScores).NodeList[len((*nodeScores).NodeList)-1]
 	klog.InfoS("Scheduling pod to node",
diff --git a/pkg/scheduler/scheduler_test.go b/pkg/scheduler/scheduler_test.go
index a5817ae9a..a5924602d 100644
--- a/pkg/scheduler/scheduler_test.go
+++ b/pkg/scheduler/scheduler_test.go
@@ -670,8 +670,8 @@ func Test_RegisterFromNodeAnnotations(t *testing.T) {
 					t.Errorf("missing annotation: hami.io/node-handshake-dcu")
 					return false
 				}
-				_, errHami := time.Parse(time.DateTime, strings.TrimPrefix(handshakeTimeStr, "Requesting_"))
-				_, errDcu := time.Parse(time.DateTime, strings.TrimPrefix(dcuTimeStr, "Requesting_"))
+				_, errHami := time.Parse(time.DateTime, trimHandshakePrefix(handshakeTimeStr))
+				_, errDcu := time.Parse(time.DateTime, trimHandshakePrefix(dcuTimeStr))
 				if errHami != nil {
 					t.Errorf("invalid time format in annotation 'hami.io/node-handshake': %v", errHami)
 					return false
@@ -786,8 +786,8 @@ func Test_RegisterFromNodeAnnotations_NIL(t *testing.T) {
 				}
 
 				// Verify time format in annotations if they exist
-				_, errHami := time.Parse(time.DateTime, strings.TrimPrefix(handshakeTimeStr, "Requesting_"))
-				_, errDcu := time.Parse(time.DateTime, strings.TrimPrefix(dcuTimeStr, "Requesting_"))
+				_, errHami := time.Parse(time.DateTime, trimHandshakePrefix(handshakeTimeStr))
+				_, errDcu := time.Parse(time.DateTime, trimHandshakePrefix(dcuTimeStr))
 
 				if errHami != nil {
 					t.Errorf("invalid time format in annotation 'hami.io/node-handshake': %v", errHami)
@@ -837,3 +837,13 @@ func Test_RegisterFromNodeAnnotations_NIL(t *testing.T) {
 		})
 	}
 }
+
+func trimHandshakePrefix(s string) string {
+	prefixes := []string{"Requesting_", "Deleted_"}
+	for _, p := range prefixes {
+		if strings.HasPrefix(s, p) {
+			return strings.TrimPrefix(s, p)
+		}
+	}
+	return s
+}