diff --git a/pkg/compute/models/guest_actions.go b/pkg/compute/models/guest_actions.go
index 342f50bab6..48d9bbef1b 100644
--- a/pkg/compute/models/guest_actions.go
+++ b/pkg/compute/models/guest_actions.go
@@ -1476,7 +1476,10 @@ func (self *SGuest) StartGueststartTask(
 
 	if self.CpuNumaPin != nil {
 		// clean cpu numa pin
-		self.SetCpuNumaPin(ctx, userCred, nil, nil)
+		err := self.SetCpuNumaPin(ctx, userCred, nil, nil)
+		if err != nil {
+			return errors.Wrap(err, "clean cpu numa pin")
+		}
 	}
 
 	if schedStart {
@@ -1509,6 +1512,18 @@ func (self *SGuest) GuestNonSchedStartTask(
 	if self.BackupHostId != "" {
 		taskName = "HAGuestStartTask"
 	}
+	if self.CpuNumaPin != nil {
+		srcSchedCpuNumaPin := make([]schedapi.SCpuNumaPin, 0)
+		err := self.CpuNumaPin.Unmarshal(&srcSchedCpuNumaPin)
+		if err != nil {
+			return errors.Wrap(err, "unmarshal cpu_numa_pin")
+		}
+		// set cpu numa pin
+		err = self.SetCpuNumaPin(ctx, userCred, srcSchedCpuNumaPin, nil)
+		if err != nil {
+			return nil
+		}
+	}
 	task, err := taskman.TaskManager.NewTask(ctx, taskName, self, userCred, data, parentTaskId, "", nil)
 	if err != nil {
 		return err
diff --git a/pkg/compute/models/guests.go b/pkg/compute/models/guests.go
index da608a1ed5..3c1629f48d 100644
--- a/pkg/compute/models/guests.go
+++ b/pkg/compute/models/guests.go
@@ -1295,11 +1295,14 @@ func (guest *SGuest) SetCpuNumaPin(
 				SizeMB: schedCpuNumaPin[i].MemSizeMB,
 				NodeId: schedCpuNumaPin[i].NodeId,
 			}
-			cpuNumaPin[i].VcpuPin = make([]api.SVCpuPin, len(schedCpuNumaPin[i].CpuPin))
-			for j := range schedCpuNumaPin[i].CpuPin {
-				cpuNumaPin[i].VcpuPin[j].Pcpu = schedCpuNumaPin[i].CpuPin[j]
-				cpuNumaPin[i].VcpuPin[j].Vcpu = vcpuId
-				vcpuId += 1
+
+			if len(schedCpuNumaPin[i].CpuPin) > 0 {
+				cpuNumaPin[i].VcpuPin = make([]api.SVCpuPin, len(schedCpuNumaPin[i].CpuPin))
+				for j := range schedCpuNumaPin[i].CpuPin {
+					cpuNumaPin[i].VcpuPin[j].Pcpu = schedCpuNumaPin[i].CpuPin[j]
+					cpuNumaPin[i].VcpuPin[j].Vcpu = vcpuId
+					vcpuId += 1
+				}
 			}
 		}
 	}
diff --git a/pkg/compute/tasks/guest_change_config_task.go b/pkg/compute/tasks/guest_change_config_task.go
index 12633fc0e4..c075669e61 100644
--- a/pkg/compute/tasks/guest_change_config_task.go
+++ b/pkg/compute/tasks/guest_change_config_task.go
@@ -263,7 +263,10 @@ func (task *GuestChangeConfigTask) OnGuestChangeCpuMemSpecComplete(ctx context.C
 		cpuNumaPinSched := make([]schedapi.SCpuNumaPin, 0)
 		task.Params.Unmarshal(&cpuNumaPinSched, "cpu_numa_pin")
 		cpuNumaPinTarget := make([]api.SCpuNumaPin, 0)
-		data.Unmarshal(&cpuNumaPinTarget, "cpu_numa_pin")
+		if data.Contains("cpu_numa_pin") {
+			data.Unmarshal(&cpuNumaPinTarget, "cpu_numa_pin")
+		}
+
 		err = guest.UpdateCpuNumaPin(ctx, task.UserCred, cpuNumaPinSched, cpuNumaPinTarget)
 		if err != nil {
 			task.markStageFailed(ctx, guest, jsonutils.NewString(fmt.Sprintf("Update cpu numa pin fail %s", err)))
diff --git a/pkg/scheduler/algorithm/predicates/guest/memory_predicate.go b/pkg/scheduler/algorithm/predicates/guest/memory_predicate.go
index 51642bc67a..03f5d48bee 100644
--- a/pkg/scheduler/algorithm/predicates/guest/memory_predicate.go
+++ b/pkg/scheduler/algorithm/predicates/guest/memory_predicate.go
@@ -69,7 +69,6 @@ func (p *MemoryPredicate) Execute(ctx context.Context, u *core.Unit, c core.Cand
 
 	if cpuNumaFree := getter.GetFreeCpuNuma(); cpuNumaFree != nil {
 		allcateEnough := false
-		reqCpuCount := d.Ncpu
 		if d.CpuNumaPin != nil {
 			nodeCount := len(d.CpuNumaPin)
 			if scheduler.NodesFreeCpuEnough(nodeCount, d.Ncpu, cpuNumaFree) &&
@@ -78,10 +77,6 @@ func (p *MemoryPredicate) Execute(ctx context.Context, u *core.Unit, c core.Cand
 			}
 		} else {
 			for nodeCount := 1; nodeCount <= len(cpuNumaFree); nodeCount *= 2 {
-				if nodeCount > reqCpuCount {
-					break
-				}
-
 				if !scheduler.NodesFreeCpuEnough(nodeCount, d.Ncpu, cpuNumaFree) {
 					continue
 				}
diff --git a/pkg/scheduler/algorithm/priorities/guest/cpunumapin.go b/pkg/scheduler/algorithm/priorities/guest/cpunumapin.go
index 3aec3a28ee..f8cc890448 100644
--- a/pkg/scheduler/algorithm/priorities/guest/cpunumapin.go
+++ b/pkg/scheduler/algorithm/priorities/guest/cpunumapin.go
@@ -43,11 +43,6 @@ func (p *CpuNumaPinPriority) Map(u *core.Unit, c core.Candidater) (core.HostPrio
 		reqMemSize := u.SchedInfo.Memory
 		nodeCount := 1
 		for ; nodeCount <= len(cpuNumaFree); nodeCount *= 2 {
-			if nodeCount > reqCpuCount {
-				nodeCount = 0
-				break
-			}
-
 			if scheduler.NodesFreeCpuEnough(nodeCount, reqCpuCount, cpuNumaFree) &&
 				scheduler.NodesFreeMemSizeEnough(nodeCount, int(reqMemSize), cpuNumaFree) {
 				break
diff --git a/pkg/scheduler/cache/candidate/hosts.go b/pkg/scheduler/cache/candidate/hosts.go
index 64c8cdecb2..d5969bd365 100644
--- a/pkg/scheduler/cache/candidate/hosts.go
+++ b/pkg/scheduler/cache/candidate/hosts.go
@@ -324,6 +324,10 @@ func (n *NumaNode) allocCpuset(vcpuCount int, usedCpu map[int]int) {
 }
 
 func (n *NumaNode) AllocCpuset(vcpuCount int) []int {
+	if vcpuCount <= 0 {
+		return nil
+	}
+
 	var usedCpuCount = make(map[int]int)
 	n.allocCpuset(vcpuCount, usedCpuCount)
 
@@ -472,9 +476,6 @@ func (h *SHostTopo) nodesEnough(nodeCount, vcpuCount int, memSizeKB int) bool {
 func (h *SHostTopo) AllocCpuNumaNodes(vcpuCount, memSizeKB int) []scheduler.SCpuNumaPin {
 	res := make([]scheduler.SCpuNumaPin, 0)
 	for nodeCount := 1; nodeCount <= len(h.Nodes); nodeCount *= 2 {
-		if nodeCount > vcpuCount {
-			break
-		}
 		if ok := h.nodesEnough(nodeCount, vcpuCount, memSizeKB); !ok {
 			log.Infof("node count %d not enough", nodeCount)
 			continue