diff --git a/model/commands.go b/model/commands.go
index 999b9c0..1028f65 100644
--- a/model/commands.go
+++ b/model/commands.go
@@ -135,3 +135,29 @@ func AddCommand(cmdkey, message, group string) (cmd *Commands, err error) {
 	}
 	return
 }
+
+// CheckCommand -
+func CheckCommand(cmd, group string) (exist bool, err error) {
+	if len(cmd) == 0 {
+		return false, errors.New("cmd is empty")
+	}
+	query := `select count(*) as c from "public"."commands" where "cmd" = $1 and "group" = $2`
+	c := 0
+
+	err = x.Get(&c, query, cmd, group)
+	if err != nil {
+		return false, err
+	}
+
+	return c > 0, nil
+}
+
+// DeleteCommand -
+func DeleteCommand(cmd, group string) (err error) {
+	if len(cmd) == 0 {
+		return errors.New("cmd is empty")
+	}
+	query := `delete from "public"."commands" where "cmd" = $1 and "group" = $2`
+	_, err = x.Exec(query, cmd, group)
+	return
+}
diff --git a/router/api/line.go b/router/api/line.go
index 313b0cc..afa07fa 100644
--- a/router/api/line.go
+++ b/router/api/line.go
@@ -160,7 +160,6 @@ func GetCommandList(c *context.Context) {
 
 // AddLineGroupCommand -
 func AddLineGroupCommand(c *context.Context) {
-	// TODO
 	bodyStruct := struct {
 		Cmd     string `json:"cmd"`
 		Message string `json:"message"`
@@ -188,3 +187,31 @@ func AddLineGroupCommand(c *context.Context) {
 		"cmd": utils.ToMap(cmd),
 	})
 }
+
+// DeleteLineGroupCommand -
+func DeleteLineGroupCommand(c *context.Context) {
+	cmd, ok := c.Params.Get("cmd")
+	if !ok {
+		c.DataFormat(nil)
+		return
+	}
+	g := c.DefaultQuery("group", "")
+
+	exist, err := model.CheckCommand(cmd, g)
+	if err != nil {
+		c.ServerError(nil)
+		return
+	}
+	if !exist {
+		c.NotFound(nil)
+		return
+	}
+	// TODO
+	err = model.DeleteCommand(cmd, g)
+	if err != nil {
+		c.ServerError(nil)
+		return
+	}
+
+	c.Success(nil)
+}