diff --git a/cmd/killTask.go b/cmd/killTask.go
new file mode 100644
index 0000000..7b772cd
--- /dev/null
+++ b/cmd/killTask.go
@@ -0,0 +1,74 @@
+/**
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package cmd
+
+import (
+	"strconv"
+
+	realis "github.com/aurora-scheduler/gorealis/v2"
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	rootCmd.AddCommand(killTask)
+
+	/* Sub-Commands */
+
+	// Kill Job
+	killTask.AddCommand(killTaskCmd)
+
+	killTaskCmd.Flags().StringVarP(env, "environment", "e", "", "Aurora Environment")
+	killTaskCmd.Flags().StringVarP(role, "role", "r", "", "Aurora Role")
+	killTaskCmd.Flags().StringVarP(name, "name", "n", "", "Aurora Name")
+	killTaskCmd.Flags().StringVarP(instance, "instance", "i", "", "Instance number")
+	killTaskCmd.Flags().BoolVarP(&monitor, "monitor", "m", true, "monitor the result after sending the command")
+	killTaskCmd.MarkFlagRequired("environment")
+	killTaskCmd.MarkFlagRequired("role")
+	killTaskCmd.MarkFlagRequired("name")
+	killTaskCmd.MarkFlagRequired("instance")
+}
+
+var killTask = &cobra.Command{
+	Use:   "killTask",
+	Short: "Kill an Aurora Task",
+}
+
+var killTaskCmd = &cobra.Command{
+	Use:   "task",
+	Short: "Kill an Aurora Task",
+	Run:   killTaskFunc,
+}
+
+func killTaskFunc(cmd *cobra.Command, args []string) {
+	log.Infof("Killing task [Env:%s Role:%s Name:%s Instance:%s]\n", *env, *role, *name, *instance)
+
+	//Set jobKey for the task to be killed.
+	task := realis.NewTask().
+		Environment(*env).
+		Role(*role).
+		Name(*name)
+
+	//Convert instance from string type to int32 type, and call the killtasks function
+	instanceNumber, _ := strconv.Atoi(*instance)
+	_, err := client.KillInstances(task.JobKey(), (int32)(instanceNumber))
+
+	if err != nil {
+		log.Fatalln(err)
+	}
+	if monitor {
+		if ok, err := client.MonitorInstances(task.JobKey(), 0, 5, 50); !ok || err != nil {
+			log.Fatalln("Unable to kill the given task")
+		}
+	}
+}
diff --git a/cmd/root.go b/cmd/root.go
index d2d0d71..2d151ee 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -28,7 +28,7 @@ import (
 )
 
 var username, password, zkAddr, schedAddr string
-var env, role, name = new(string), new(string), new(string)
+var env, role, name, instance = new(string), new(string), new(string), new(string)
 var dedicated string
 var ram, disk, gpu, port int64
 var cpu float64