diff --git a/hook/main.go b/hook/main.go
index 9a88bab..f7af535 100644
--- a/hook/main.go
+++ b/hook/main.go
@@ -40,13 +40,13 @@ const (
 	operateLogPath         = "/var/log/ascend-docker-runtime/hook-operate.log"
 	ascendRuntimeOptions   = "ASCEND_RUNTIME_OPTIONS"
 	ascendRuntimeMounts    = "ASCEND_RUNTIME_MOUNTS"
+	ascendVisibleDevices   = "ASCEND_VISIBLE_DEVICES"
 	ascendDockerCli        = "ascend-docker-cli"
 	defaultAscendDockerCli = "/usr/local/bin/ascend-docker-cli"
 	configDir              = "/etc/ascend-docker-runtime.d"
 	baseConfig             = "base"
 	configFileSuffix       = "list"
 
-	borderNum        = 2
 	kvPairSize       = 2
 	maxCommandLength = 65535
 )
@@ -327,6 +327,10 @@ func doPrestartHook() error {
 		return fmt.Errorf("failed to get container config: %v", err)
 	}
 
+	if visibleDevices := getValueByKey(containerConfig.Env, ascendVisibleDevices); visibleDevices == "" {
+		return nil
+	}
+
 	mountConfigs := parseMounts(getValueByKey(containerConfig.Env, ascendRuntimeMounts))
 
 	fileMountList, dirMountList, err := readConfigsOfDir(configDir, mountConfigs)