diff --git a/api/service/Public.go b/api/service/Public.go
index 8bd62af..d529e36 100644
--- a/api/service/Public.go
+++ b/api/service/Public.go
@@ -8,6 +8,7 @@ import (
 	"hepa-calc-api/extend/aliyun"
 	"hepa-calc-api/global"
 	"math/rand"
+	"net/http"
 	"strconv"
 	"time"
 )
@@ -121,3 +122,12 @@ func (r *PublicService) GetIndex(userId int64) (g *dto.IndexDto, err error) {
 
 	return g, nil
 }
+
+// GetUserIP 获取用户ip
+func (r *PublicService) GetUserIP(h *http.Request) string {
+	forwarded := h.Header.Get("X-FORWARDED-FOR")
+	if forwarded != "" {
+		return forwarded
+	}
+	return h.RemoteAddr
+}