diff --git a/main.go b/main.go
index dd10a93..96ed084 100644
--- a/main.go
+++ b/main.go
@@ -27,6 +27,11 @@ func main() {
 		case "restart":
 			action = restart
 		case "update":
+			// 如果image和tag有空值，报错
+			if os.Getenv("PLUGIN_IMAGE") == "" || os.Getenv("PLUGIN_TAG") == "" {
+				panic("Configuration item image or tag must not be empty")
+				return
+			}
 			action = update
 		}
 	}
@@ -43,24 +48,28 @@ func main() {
 		Action: action,
 		Flags: []cli.Flag{
 			&cli.StringFlag{
-				Name:    "cluster",
-				Usage:   "cluster name",
-				EnvVars: []string{"PLUGIN_CLUSTER"},
+				Required: true,
+				Name:     "cluster",
+				Usage:    "cluster name",
+				EnvVars:  []string{"PLUGIN_CLUSTER"},
 			},
 			&cli.StringFlag{
-				Name:    "kind",
-				Usage:   "workload type",
-				EnvVars: []string{"PLUGIN_KIND"},
+				Required: true,
+				Name:     "kind",
+				Usage:    "workload type",
+				EnvVars:  []string{"PLUGIN_KIND"},
 			},
 			&cli.StringFlag{
-				Name:    "name",
-				Usage:   "workload name",
-				EnvVars: []string{"PLUGIN_NAME"},
+				Required: true,
+				Name:     "name",
+				Usage:    "workload name",
+				EnvVars:  []string{"PLUGIN_NAME"},
 			},
 			&cli.StringFlag{
-				Name:    "namespace",
-				Usage:   "workload namespace",
-				EnvVars: []string{"PLUGIN_NAMESPACE"},
+				Required: true,
+				Name:     "namespace",
+				Usage:    "workload namespace",
+				EnvVars:  []string{"PLUGIN_NAMESPACE"},
 			},
 			&cli.StringFlag{
 				Name:    "image",
@@ -73,19 +82,22 @@ func main() {
 				EnvVars: []string{"PLUGIN_TAG"},
 			},
 			&cli.StringFlag{
-				Name:    "kuboard_uri",
-				Usage:   "kuboard uri",
-				EnvVars: []string{"PLUGIN_KUBOARD_URI"},
+				Required: true,
+				Name:     "kuboard_uri",
+				Usage:    "kuboard uri",
+				EnvVars:  []string{"PLUGIN_KUBOARD_URI"},
 			},
 			&cli.StringFlag{
-				Name:    "kuboard_username",
-				Usage:   "kuboard username",
-				EnvVars: []string{"PLUGIN_KUBOARD_USERNAME"},
+				Required: true,
+				Name:     "kuboard_username",
+				Usage:    "kuboard username",
+				EnvVars:  []string{"PLUGIN_KUBOARD_USERNAME"},
 			},
 			&cli.StringFlag{
-				Name:    "kuboard_key",
-				Usage:   "kuboard access key",
-				EnvVars: []string{"PLUGIN_KUBOARD_KEY"},
+				Required: true,
+				Name:     "kuboard_key",
+				Usage:    "kuboard access key",
+				EnvVars:  []string{"PLUGIN_KUBOARD_KEY"},
 			},
 		},
 	}