diff --git a/README.md b/README.md
index 3e2d32a..41409d4 100644
--- a/README.md
+++ b/README.md
@@ -83,6 +83,10 @@ build_pkg: ""
 # build tags
 build_tags: ""
 
+# Commands that can be executed before running the app
+#external_cmd:
+#  - swag init
+
 # Whether to prohibit automatic operation
 disable_run: false
 
diff --git a/README_ZH_CN.md b/README_ZH_CN.md
index 79ae41f..1be694b 100644
--- a/README_ZH_CN.md
+++ b/README_ZH_CN.md
@@ -70,6 +70,9 @@ build_tags: ""
 # 是否禁止自动运行
 disable_run: false
 
+#在执行app执行的命令 ，例如 swag init
+#external_cmd:
+#  - swag init
 ```
 
 ## 微信公众号
diff --git a/config.go b/config.go
index e3d5b76..f4fff63 100644
--- a/config.go
+++ b/config.go
@@ -19,6 +19,8 @@ type config struct {
 	WatchExts []string `yaml:"watch_exts"`
 	//需要追加监听的目录，默认是当前文件夹，
 	WatchPaths []string `yaml:"watch_paths"`
+	//运行前额外执行的命令
+	ExternalCmds []string `yaml:"external_cmds"`
 	//执行时的额外参数
 	CmdArgs []string `yaml:"cmd_args"`
 	//构建时的额外参数
diff --git a/example/gowatch.yml b/example/gowatch.yml
index 0c34ccc..372e195 100644
--- a/example/gowatch.yml
+++ b/example/gowatch.yml
@@ -25,4 +25,7 @@ output: ./example
 
 #build_tags: ""
 
+#external_cmd:
+#  - go version
+
 disable_run: false
diff --git a/gowatch.go b/gowatch.go
index c648475..ab1717e 100644
--- a/gowatch.go
+++ b/gowatch.go
@@ -174,12 +174,24 @@ func Start(appname string) {
 		appname = "./" + appname
 	}
 
-	cmd = exec.Command(appname)
+	for _, externalCmd := range cfg.ExternalCmds {
+		log.Infof("Run external cmd '%s'", externalCmd)
+		cmdArr := strings.Split(externalCmd, " ")
+		externalCmdExec := exec.Command(cmdArr[0])
+		externalCmdExec.Env = append(os.Environ(), cfg.Envs...)
+		externalCmdExec.Args = cmdArr
+		externalCmdExec.Stdout = os.Stdout
+		externalCmdExec.Stderr = os.Stderr
+		err := externalCmdExec.Run()
+		if err != nil {
+			panic(err)
+		}
+	}
+	cmd = exec.Command(appname, cfg.CmdArgs...)
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr
-	cmd.Args = append([]string{appname}, cfg.CmdArgs...)
 	cmd.Env = append(os.Environ(), cfg.Envs...)
-	log.Infof("Run %s", strings.Join(cmd.Args, " "))
+	log.Infof("Run '%s'", strings.Join(cmd.Args, " "))
 	go func() {
 		_ = cmd.Run()
 	}()
diff --git a/version.go b/version.go
index f960901..8ace6e0 100644
--- a/version.go
+++ b/version.go
@@ -2,7 +2,7 @@ package main
 
 import "fmt"
 
-const version = "1.3"
+const version = "1.4"
 
 func printVersion() {
 	fmt.Println(version)