diff --git a/advisor/heuristic.go b/advisor/heuristic.go
index 02699f831ac679aea4a8d4c26945c97d4d5d304e..a21088eb0ac42a243bdda62c832af8eb9a66df97 100644
--- a/advisor/heuristic.go
+++ b/advisor/heuristic.go
@@ -1275,7 +1275,7 @@ func (q *Query4Audit) RuleMeaninglessWhere() Rule {
 func (q *Query4Audit) RuleLoadFile() Rule {
 	var rule = q.RuleOK()
 	// 去除注释
-	sql := string(database.RemoveSQLComments([]byte(q.Query)))
+	sql := database.RemoveSQLComments(q.Query)
 	// 去除多余的空格和回车
 	sql = strings.Join(strings.Fields(sql), " ")
 	tks := ast.Tokenize(sql)
diff --git a/cmd/soar/soar.go b/cmd/soar/soar.go
index ac0c97e25ac0516d452dac612d6919a6dd7df2dd..cb7172c5267cb3295b95f7373da182c125de2507 100644
--- a/cmd/soar/soar.go
+++ b/cmd/soar/soar.go
@@ -120,8 +120,7 @@ func main() {
 		buf = string(bufBytes)
 
 		// 去除无用的备注和空格
-		sql = strings.TrimSpace(sql)
-		sql = string(database.RemoveSQLComments([]byte(sql)))
+		sql = database.RemoveSQLComments(sql)
 		if sql == "" {
 			common.Log.Debug("empty query or comment, buf: %s", buf)
 			continue
diff --git a/cmd/soar/tool.go b/cmd/soar/tool.go
index ccad724ffa6b2c7096578445aeffce3044ac40f9..7e550b577fd49b0c32fc321e415206193c158cbe 100644
--- a/cmd/soar/tool.go
+++ b/cmd/soar/tool.go
@@ -175,7 +175,7 @@ func reportTool(sql string, bom []byte) (isContinue bool, exitCode int) {
 		fmt.Println(charset)
 		return false, 0
 	case "remove-comment":
-		fmt.Println(string(database.RemoveSQLComments([]byte(sql))))
+		fmt.Println(database.RemoveSQLComments(sql))
 		return false, 0
 	default:
 		return true, 0
diff --git a/database/explain.go b/database/explain.go
index 2924740f84a30a0d0bbedc9eb07bf9980c524688..1f5880bf0ecea89be99d1ad8f196524c2335f9e5 100644
--- a/database/explain.go
+++ b/database/explain.go
@@ -384,7 +384,7 @@ var ExplainExtra = map[string]string{
 func findTablesInJSON(explainJSON string, depth int) {
 	common.Log.Debug("findTablesInJSON Enter: depth(%d), json(%s)", depth, explainJSON)
 	// 去除注释，语法检查
-	explainJSON = string(RemoveSQLComments([]byte(explainJSON)))
+	explainJSON = RemoveSQLComments(explainJSON)
 	if !gjson.Valid(explainJSON) {
 		return
 	}
@@ -923,7 +923,7 @@ func parseVerticalExplainText(content string) (explainRows []*ExplainRow, err er
 // 解析文本形式JSON Explain信息
 func parseJSONExplainText(content string) (*ExplainJSON, error) {
 	explainJSON := new(ExplainJSON)
-	err := json.Unmarshal(RemoveSQLComments([]byte(content)), explainJSON)
+	err := json.Unmarshal([]byte(RemoveSQLComments(content)), explainJSON)
 	return explainJSON, err
 }
 
diff --git a/database/explain_test.go b/database/explain_test.go
index 1aa5715db6fd7bd29e03db9e4b0d9b9216da4f51..01ef50f923322d55c2fb48bdf1d12207e39537b8 100644
--- a/database/explain_test.go
+++ b/database/explain_test.go
@@ -2366,7 +2366,7 @@ func TestExplain(t *testing.T) {
 
 func TestParseExplainText(t *testing.T) {
 	for _, content := range exp {
-		pretty.Println(string(RemoveSQLComments([]byte(content))))
+		pretty.Println(RemoveSQLComments(content))
 		pretty.Println(ParseExplainText(content))
 	}
 	/*
diff --git a/database/mysql.go b/database/mysql.go
index 6f1ce4527d036e14efa1dd7547b82bdc1312e009..fa6927d46d17252829fc5e594f7b35d3beb0c843 100644
--- a/database/mysql.go
+++ b/database/mysql.go
@@ -259,10 +259,11 @@ func (db *Connector) IsView(tbName string) bool {
 }
 
 // RemoveSQLComments 去除SQL中的注释
-func RemoveSQLComments(sql []byte) []byte {
+func RemoveSQLComments(sql string) string {
+	buf := []byte(sql)
 	cmtReg := regexp.MustCompile(`("(""|[^"])*")|('(''|[^'])*')|(--[^\n\r]*)|(#.*)|(/\*([^*]|[\r\n]|(\*+([^*/]|[\r\n])))*\*+/)`)
 
-	return cmtReg.ReplaceAllFunc(sql, func(s []byte) []byte {
+	res := cmtReg.ReplaceAllFunc(buf, func(s []byte) []byte {
 		if (s[0] == '"' && s[len(s)-1] == '"') ||
 			(s[0] == '\'' && s[len(s)-1] == '\'') ||
 			(string(s[:3]) == "/*!") {
@@ -270,6 +271,7 @@ func RemoveSQLComments(sql []byte) []byte {
 		}
 		return []byte("")
 	})
+	return strings.TrimSpace(string(res))
 }
 
 // 为了防止在 Online 环境进行误操作，通过 dangerousQuery 来判断能否在 Online 执行
diff --git a/database/mysql_test.go b/database/mysql_test.go
index 2914c8896cc0e7c2c3aa9eae2c4ac7c1bc31083b..79ea7bdd2a84c6254086dbdeb665d08bd528391e 100644
--- a/database/mysql_test.go
+++ b/database/mysql_test.go
@@ -88,3 +88,24 @@ func TestSource(t *testing.T) {
 		t.Error("Source result not match, expect 1, 1")
 	}
 }
+
+func TestRemoveSQLComments(t *testing.T) {
+	SQLs := []string{
+		`-- comment`,
+		`--`,
+		`# comment`,
+		`/* multi-line
+comment*/`,
+		`--
+-- comment`,
+	}
+
+	err := common.GoldenDiff(func() {
+		for _, sql := range SQLs {
+			fmt.Println(RemoveSQLComments(sql))
+		}
+	}, t.Name(), update)
+	if err != nil {
+		t.Error(err)
+	}
+}
diff --git a/database/testdata/TestRemoveSQLComments.golden b/database/testdata/TestRemoveSQLComments.golden
new file mode 100644
index 0000000000000000000000000000000000000000..3f2ff2d6cc8f257ffcade7ead1ca4042c0e884b9
--- /dev/null
+++ b/database/testdata/TestRemoveSQLComments.golden
@@ -0,0 +1,5 @@
+
+
+
+
+