diff --git a/glc/ldb/storage/logdata/logdata_storage.go b/glc/ldb/storage/logdata/logdata_storage.go
index 2313e7b..91fc28f 100644
--- a/glc/ldb/storage/logdata/logdata_storage.go
+++ b/glc/ldb/storage/logdata/logdata_storage.go
@@ -189,13 +189,13 @@ func (s *LogDataStorage) createInvertedIndex() int {
 	// 整理生成关键词
 	var adds []string
 	if docm.System != "" {
-		adds = append(adds, "~"+docm.System)
+		adds = append(adds, "~"+cmn.ToLower(docm.System))
 	}
 	if docm.LogLevel != "" {
-		adds = append(adds, "!"+docm.LogLevel)
+		adds = append(adds, "!"+cmn.ToLower(docm.LogLevel))
 	}
 	if docm.User != "" {
-		adds = append(adds, "@"+docm.User)
+		adds = append(adds, "@"+cmn.ToLower(docm.User))
 	}
 
 	tgtStr := docm.System + " " + docm.ServerName + " " + docm.ServerIp + " " + docm.ClientIp + " " + docm.TraceId + " " + docm.LogLevel + " " + docm.User
diff --git a/glc/www/controller/log_search_controller.go b/glc/www/controller/log_search_controller.go
index ed9f1a1..221b4f2 100644
--- a/glc/www/controller/log_search_controller.go
+++ b/glc/www/controller/log_search_controller.go
@@ -49,7 +49,7 @@ func LogSearchController(req *gweb.HttpRequest) *gweb.HttpResult {
 	cond.NearStoreName = req.GetFormParameter("nearStoreName")                // 相邻检索时新ID对应的日志仓
 	cond.DatetimeFrom = req.GetFormParameter("datetimeFrom")                  // 日期范围（From）
 	cond.DatetimeTo = req.GetFormParameter("datetimeTo")                      // 日期范围（To）
-	cond.OrgSystem = cmn.Trim(req.GetFormParameter("system"))                 // 系统
+	cond.OrgSystem = cmn.ToLower(cmn.Trim(req.GetFormParameter("system")))    // 系统
 	cond.User = cmn.ToLower(cmn.Trim(req.GetFormParameter("user")))           // 用户
 	cond.Loglevel = cmn.ToLower(req.GetFormParameter("loglevel"))             // 单选条件
 	cond.Loglevels = cmn.Split(cond.Loglevel, ",")                            // 多选条件