diff --git a/back-end/logger.log b/back-end/logger.log
index dfb14df..541fdb6 100644
--- a/back-end/logger.log
+++ b/back-end/logger.log
@@ -711,3 +711,5 @@
 2024-10-11T17:41:38.329+0800	INFO	logger/logger.go:84	/save-info	{"status": 200, "method": "GET", "path": "/save-info", "query": "", "ip": "::1", "user-agent": "Apifox/1.0.0 (https://www.apifox.cn)", "errors": "", "cost": 0.0032669}
 2024-10-11T17:44:29.619+0800	INFO	gfsd/gfsd.go:39	Shutdown Server ...
 2024-10-11T17:44:29.619+0800	INFO	gfsd/gfsd.go:48	Server exiting
+2024-10-11T21:06:33.944+0800	DEBUG	back-end/main.go:33	init ogger success...
+2024-10-11T21:06:33.965+0800	ERROR	mysql/mysql.go:51	import Sql failed	{"error": "Error 1193 (HY000): Unknown system variable 'query_cache_type'"}
diff --git a/back-end/logic/roll.go b/back-end/logic/roll.go
index c4830c7..8752c92 100644
--- a/back-end/logic/roll.go
+++ b/back-end/logic/roll.go
@@ -73,8 +73,10 @@ func WeightedRandomSelect(users []models.User, seed int64) models.User {
 	for i, user := range users {
 		if user.User_score == 0 {
 			weights[i] = 3
-		} else {
+		} else if user.User_score > 0 {
 			weights[i] = 1.0 / float64(user.User_score)
+		} else {
+			weights[i] = 0 - float64(user.User_score) + 3
 		}
 		totalWeight += weights[i]
 	}