diff --git a/tools/check.go b/tools/check.go
index b516237..29bef32 100644
--- a/tools/check.go
+++ b/tools/check.go
@@ -5,6 +5,7 @@ import (
 	"os"
 	"regexp"
 	"strings"
+	"unicode/utf8"
 )
 
 // CheckParam 检测参数
@@ -78,3 +79,7 @@ func IsKeywords(t string) bool {
 	}
 	return false
 }
+
+func IsUtf8(data []byte) bool {
+	return utf8.Valid(data)
+}