diff --git a/master/api_service.go b/master/api_service.go
index 3f073b323..fcc466830 100644
--- a/master/api_service.go
+++ b/master/api_service.go
@@ -6888,6 +6888,7 @@ func (m *Server) queryDataNodeDecoProgress(w http.ResponseWriter, r *http.Reques
 		Progress:      fmt.Sprintf("%.2f%%", progress*float64(100)),
 		StatusMessage: GetDecommissionStatusMessage(status),
 		TotalDpCnt:    dn.DecommissionDpTotal,
+		StartTime:     time.Unix(int64(dn.DecommissionTime), 0).String(),
 	}
 	remainingDpCnt, failedDps, runningDps := dn.GetDecommissionFailedAndRunningDPByTerm(m.cluster)
 	resp.FailedDps = failedDps
diff --git a/master/data_node.go b/master/data_node.go
index 00f8672fe..5fa185df6 100644
--- a/master/data_node.go
+++ b/master/data_node.go
@@ -78,6 +78,7 @@ type DataNode struct {
 	DecommissionLimit                  int
 	DecommissionWeight                 int
 	DecommissionFirstHostParallelLimit uint64
+	DecommissionTime                   uint64
 	DecommissionCompleteTime           int64
 	DpCntLimit                         uint64             `json:"-"` // max count of data partition in a data node
 	CpuUtil                            atomicutil.Float64 `json:"-"`
@@ -736,6 +737,7 @@ func (dataNode *DataNode) markDecommission(targetAddr string, raftForce bool, li
 	dataNode.DecommissionLimit = limit
 	dataNode.DecommissionWeight = weight
 	dataNode.DecommissionDiskList = make([]string, 0)
+	dataNode.DecommissionTime = uint64(time.Now().Unix())
 }
 
 func (dataNode *DataNode) markDecommissionSuccess(c *Cluster) {
diff --git a/master/metadata_fsm_op.go b/master/metadata_fsm_op.go
index 181477a3e..5cccf92d7 100644
--- a/master/metadata_fsm_op.go
+++ b/master/metadata_fsm_op.go
@@ -529,6 +529,7 @@ type dataNodeValue struct {
 	DecommissionLimit                  int
 	DecommissionWeight                 int
 	DecommissionFirstHostParallelLimit uint64
+	DecommissionTime                   uint64
 	DecommissionCompleteTime           int64
 	ToBeOffline                        bool
 	DecommissionDiskList               []string
@@ -558,6 +559,7 @@ func newDataNodeValue(dataNode *DataNode) *dataNodeValue {
 		DecommissionLimit:                  dataNode.DecommissionLimit,
 		DecommissionWeight:                 dataNode.DecommissionWeight,
 		DecommissionFirstHostParallelLimit: dataNode.DecommissionFirstHostParallelLimit,
+		DecommissionTime:                   dataNode.DecommissionTime,
 		DecommissionCompleteTime:           dataNode.DecommissionCompleteTime,
 		ToBeOffline:                        dataNode.ToBeOffline,
 		DecommissionDiskList:               dataNode.DecommissionDiskList,
@@ -1678,6 +1680,7 @@ func (c *Cluster) loadDataNodes() (err error) {
 		dataNode.DecommissionLimit = dnv.DecommissionLimit
 		dataNode.DecommissionWeight = dnv.DecommissionWeight
 		dataNode.DecommissionFirstHostParallelLimit = dnv.DecommissionFirstHostParallelLimit
+		dataNode.DecommissionTime = dnv.DecommissionTime
 		dataNode.DecommissionCompleteTime = dnv.DecommissionCompleteTime
 		dataNode.ToBeOffline = dnv.ToBeOffline
 		dataNode.DecommissionDiskList = dnv.DecommissionDiskList
diff --git a/proto/model.go b/proto/model.go
index 123fbc9e8..34d4a6078 100644
--- a/proto/model.go
+++ b/proto/model.go
@@ -476,6 +476,7 @@ type DataDecommissionProgress struct {
 	FailedDps      []FailedDpInfo
 	IgnoreDps      []IgnoreDecommissionDP
 	ResidualDps    []IgnoreDecommissionDP
+	StartTime      string
 }
 
 type DiskInfo struct {