diff --git a/internal/actor/job_instance_actor.go b/internal/actor/job_instance_actor.go
index ffd431b..20ee8dd 100644
--- a/internal/actor/job_instance_actor.go
+++ b/internal/actor/job_instance_actor.go
@@ -19,6 +19,8 @@ package actor
 import (
 	"context"
 	"fmt"
+	"github.com/alibaba/schedulerx-worker-go/processor"
+	"github.com/tidwall/gjson"
 	"time"
 
 	"github.com/asynkron/protoactor-go/actor"
@@ -129,32 +131,56 @@ func (a *jobInstanceActor) handleSubmitJobInstance(actorCtx actor.Context, msg *
 			Success: proto.Bool(true),
 		}
 		actorCtx.Send(actorcomm.SchedulerxServerPid(msg.Ctx), actorcomm.WrapSchedulerxMsg(msg.Ctx, resp, msg.SenderPath))
-
 		jobInstanceInfo := convert2JobInstanceInfo(req)
-		var taskMaster taskmaster.TaskMaster
-		switch common.ExecuteMode(jobInstanceInfo.GetExecuteMode()) {
-		case common.StandaloneExecuteMode:
-			taskMaster = master.NewStandaloneTaskMaster(jobInstanceInfo, actorCtx)
-		case common.BroadcastExecuteMode:
-			taskMaster = master.NewBroadcastTaskMaster(jobInstanceInfo, actorCtx)
-		case common.BatchExecuteMode:
-			taskMaster = master.NewBatchTaskMaster(jobInstanceInfo, actorCtx)
-		case common.ParallelExecuteMode:
-			taskMaster = master.NewParallelTaskMaster(jobInstanceInfo, actorCtx)
-		case common.GridExecuteMode:
-			taskMaster = master.NewGridTaskMaster(jobInstanceInfo, actorCtx)
-		case common.ShardingExecuteMode:
-			taskMaster = master.NewShardingTaskMaster(jobInstanceInfo, actorCtx)
-		default:
-			logger.Errorf("Submit jobInstanceId=%d failed, unknown executeMode=%s", jobInstanceInfo.GetExecuteMode())
+
+		// check job is registered
+		jobName := gjson.Get(jobInstanceInfo.GetContent(), "jobName").String()
+		// Compatible with the existing Java language configuration mechanism
+		if jobInstanceInfo.GetJobType() == "java" {
+			jobName = gjson.Get(jobInstanceInfo.GetContent(), "className").String()
 		}
+		task, ok := masterpool.GetTaskMasterPool().Tasks().Find(jobName)
+		if !ok || task == nil {
+			fmt.Errorf("handleSubmitJobInstance error, jobName=%s is unregistered. ", jobName)
+
+			// report job instance status with at-least-once-delivery
+			req := &schedulerx.WorkerReportJobInstanceStatusRequest{
+				JobId:         proto.Int64(jobInstanceInfo.GetJobId()),
+				JobInstanceId: proto.Int64(jobInstanceInfo.GetJobInstanceId()),
+				Status:        proto.Int32(int32(processor.InstanceStatusFailed)),
+				DeliveryId:    proto.Int64(utils.GetDeliveryId()),
+				GroupId:       proto.String(jobInstanceInfo.GetGroupId()),
+				Result:        proto.String(fmt.Sprintf("jobName=%s is unregistered", jobName)),
+			}
+			actorcomm.AtLeastOnceDeliveryMsgReceiver() <- &actorcomm.SchedulerWrappedMsg{
+				Msg: req,
+			}
+		} else {
+			var taskMaster taskmaster.TaskMaster
+			switch common.ExecuteMode(jobInstanceInfo.GetExecuteMode()) {
+			case common.StandaloneExecuteMode:
+				taskMaster = master.NewStandaloneTaskMaster(jobInstanceInfo, actorCtx)
+			case common.BroadcastExecuteMode:
+				taskMaster = master.NewBroadcastTaskMaster(jobInstanceInfo, actorCtx)
+			case common.BatchExecuteMode:
+				taskMaster = master.NewBatchTaskMaster(jobInstanceInfo, actorCtx)
+			case common.ParallelExecuteMode:
+				taskMaster = master.NewParallelTaskMaster(jobInstanceInfo, actorCtx)
+			case common.GridExecuteMode:
+				taskMaster = master.NewGridTaskMaster(jobInstanceInfo, actorCtx)
+			case common.ShardingExecuteMode:
+				taskMaster = master.NewShardingTaskMaster(jobInstanceInfo, actorCtx)
+			default:
+				logger.Errorf("Submit jobInstanceId=%d failed, unknown executeMode=%s", jobInstanceInfo.GetExecuteMode())
+			}
 
-		if taskMaster != nil {
-			masterpool.GetTaskMasterPool().Put(jobInstanceInfo.GetJobInstanceId(), taskMaster)
-			if err := taskMaster.SubmitInstance(msg.Ctx, jobInstanceInfo); err != nil {
-				return err
+			if taskMaster != nil {
+				masterpool.GetTaskMasterPool().Put(jobInstanceInfo.GetJobInstanceId(), taskMaster)
+				if err := taskMaster.SubmitInstance(msg.Ctx, jobInstanceInfo); err != nil {
+					return err
+				}
+				logger.Infof("Submit jobInstanceId=%d succeed", req.GetJobInstanceId())
 			}
-			logger.Infof("Submit jobInstanceId=%d succeed", req.GetJobInstanceId())
 		}
 	}
 	return nil