diff --git a/pkg/hostman/guestman/guesttasks.go b/pkg/hostman/guestman/guesttasks.go
index 63a02e62c4..e5a5f2b4d9 100644
--- a/pkg/hostman/guestman/guesttasks.go
+++ b/pkg/hostman/guestman/guesttasks.go
@@ -768,7 +768,11 @@ func (s *SGuestLiveMigrateTask) doMigrate() {
 		copyIncremental = true
 	}
 	s.Monitor.Migrate(fmt.Sprintf("tcp:%s:%d", s.params.DestIp, s.params.DestPort),
-		copyIncremental, false, s.startMigrateStatusCheck)
+		copyIncremental, false, s.onSetMigrateDowntime)
+}
+
+func (s *SGuestLiveMigrateTask) onSetMigrateDowntime(res string) {
+	s.Monitor.MigrateSetDowntime(options.HostOptions.DefaultLiveMigrateDowntime, s.startMigrateStatusCheck)
 }
 
 func (s *SGuestLiveMigrateTask) startMigrateStatusCheck(res string) {
diff --git a/pkg/hostman/monitor/hmp.go b/pkg/hostman/monitor/hmp.go
index 2bcefd9566..da79242b15 100644
--- a/pkg/hostman/monitor/hmp.go
+++ b/pkg/hostman/monitor/hmp.go
@@ -304,6 +304,10 @@ func (m *HmpMonitor) DeviceAdd(dev string, params map[string]interface{}, callba
 	m.Query(fmt.Sprintf("device_add %s,%s", dev, strings.Join(paramsKvs, ",")), callback)
 }
 
+func (m *HmpMonitor) MigrateSetDowntime(dtSec float32, callback StringCallback) {
+	m.Query(fmt.Sprintf("migrate_set_downtime %f", dtSec), callback)
+}
+
 func (m *HmpMonitor) MigrateSetCapability(capability, state string, callback StringCallback) {
 	m.Query(fmt.Sprintf("migrate_set_capability %s %s", capability, state), callback)
 }
diff --git a/pkg/hostman/monitor/monitor.go b/pkg/hostman/monitor/monitor.go
index 9a933c95b4..9c286ff81f 100644
--- a/pkg/hostman/monitor/monitor.go
+++ b/pkg/hostman/monitor/monitor.go
@@ -175,6 +175,7 @@ type Monitor interface {
 	BlockStream(drive string, idx, blkCnt int, callback StringCallback)
 	DriveMirror(callback StringCallback, drive, target, syncMode string, unmap, blockReplication bool)
 
+	MigrateSetDowntime(dtSec float32, callback StringCallback)
 	MigrateSetCapability(capability, state string, callback StringCallback)
 	MigrateSetParameter(key, val string, callback StringCallback)
 	MigrateIncoming(address string, callback StringCallback)
diff --git a/pkg/hostman/monitor/qmp.go b/pkg/hostman/monitor/qmp.go
index 3e6bd6d8c1..6641537742 100644
--- a/pkg/hostman/monitor/qmp.go
+++ b/pkg/hostman/monitor/qmp.go
@@ -582,6 +582,21 @@ func (m *QmpMonitor) DeviceAdd(dev string, params map[string]interface{}, callba
 	// m.Query(cmd, cb)
 }
 
+func (m *QmpMonitor) MigrateSetDowntime(dtSec float32, callback StringCallback) {
+	var (
+		cb = func(res *Response) {
+			callback(m.actionResult(res))
+		}
+	)
+	cmd := &Command{
+		Execute: "migrate-set-downtime",
+		Args: map[string]interface{}{
+			"value": dtSec,
+		},
+	}
+	m.Query(cmd, cb)
+}
+
 func (m *QmpMonitor) MigrateSetCapability(capability, state string, callback StringCallback) {
 	var (
 		cb = func(res *Response) {
diff --git a/pkg/hostman/options/options.go b/pkg/hostman/options/options.go
index baa76775d0..8673ae8c06 100644
--- a/pkg/hostman/options/options.go
+++ b/pkg/hostman/options/options.go
@@ -104,7 +104,7 @@ type SHostOptions struct {
 	// 更改默认带宽限速为400GBps, qiujian
 	BandwidthLimit int `default:"400000" help:"Bandwidth upper bound when migrating disk image in MB/sec, default 400GBps"`
 	// 热迁移带宽，预期不低于8MBps, 1G Memory takes 128 seconds
-	MigrateExpectRate        int `default:"8" help:"Expected memory migration rate in MB/sec, default 8MBps"`
+	MigrateExpectRate        int `default:"32" help:"Expected memory migration rate in MB/sec, default 32MBps"`
 	MinMigrateTimeoutSeconds int `default:"30" help:"minimal timeout for a migration process, default 30 seconds"`
 
 	SnapshotDirSuffix  string `help:"Snapshot dir name equal diskId concat snapshot dir suffix" default:"_snap"`
@@ -165,6 +165,8 @@ type SHostOptions struct {
 	EnableVirtioRngDevice bool `help:"enable qemu virtio-rng device" default:"true"`
 
 	RestrictQemuImgConvertWorker bool `help:"restrict qemu-img convert worker" default:"false"`
+
+	DefaultLiveMigrateDowntime float32 `help:"allow downtime in seconds for live migrate" default:"5.0"`
 }
 
 var (