diff --git a/conf/config.yaml b/conf/config.yaml
index 4e67e3d..61a9551 100644
--- a/conf/config.yaml
+++ b/conf/config.yaml
@@ -20,7 +20,8 @@ rustdesk:
   id-server: "192.168.1.66:21116"
   relay-server: "192.168.1.66:21117"
   api-server: "http://127.0.0.1:21114"
-  key: "123456789"
+  key: ""
+  key-file: "./conf/data/id_ed25519.pub"
   personal: 1
 logger:
   path: "./runtime/log.txt"
diff --git a/config/config.go b/config/config.go
index 085809e..95a19e7 100644
--- a/config/config.go
+++ b/config/config.go
@@ -63,6 +63,7 @@ func Init(rowVal interface{}) *viper.Viper {
 	if err := v.Unmarshal(rowVal); err != nil {
 		fmt.Println(err)
 	}
+	LoadKeyFile(&rowVal.(*Config).Rustdesk)
 	return v
 }
 
diff --git a/config/rustdesk.go b/config/rustdesk.go
index 10f865d..59056d4 100644
--- a/config/rustdesk.go
+++ b/config/rustdesk.go
@@ -1,9 +1,30 @@
 package config
 
+import (
+	"os"
+)
+
 type Rustdesk struct {
 	IdServer    string `mapstructure:"id-server"`
 	RelayServer string `mapstructure:"relay-server"`
 	ApiServer   string `mapstructure:"api-server"`
 	Key         string `mapstructure:"key"`
+	KeyFile     string `mapstructure:"key-file"`
 	Personal    int    `mapstructure:"personal"`
 }
+
+func LoadKeyFile(rustdesk *Rustdesk) {
+	// Load key file
+	if rustdesk.Key != "" {
+		return
+	}
+	if rustdesk.KeyFile != "" {
+		// Load key from file
+		b, err := os.ReadFile(rustdesk.KeyFile)
+		if err != nil {
+			return
+		}
+		rustdesk.Key = string(b)
+		return
+	}
+}