diff --git a/core/parse/parse.go b/core/parse/parse.go
index 5338ee9..b73f1b2 100644
--- a/core/parse/parse.go
+++ b/core/parse/parse.go
@@ -106,10 +106,18 @@ func Decode(data []byte, body *model.Body) error {
 func Pack(name string, data map[string]string) []byte {
 	var multi []string
 	multi = append(multi, name)
-	// 固定值顺序
-	keys := []string{"seqNo", "result", "reqId", "resDesc"}
+	// 允许的拓展字段 "seqNo", "fileName"
+	// 固定值顺序 "result", "reqId", "resDesc"
+	keys := []string{"seqNo", "fileName", "result", "reqId", "resDesc"}
 	for _, key := range keys {
 		if v, ok := data[key]; ok {
+			// 长度小于32个字符，不允许带分号“;”
+			if key == "resDesc" && len(v) > 32 {
+				v = v[0:32]
+			}
+			if key == "resDesc" && strings.Contains(v, ";") {
+				v = strings.ReplaceAll(v, ";", "")
+			}
 			multi = append(multi, fmt.Sprintf("%s=%s", key, v))
 		}
 	}