diff --git a/db/hotimedb.go b/db/hotimedb.go
index c93eb61..442e36d 100644
--- a/db/hotimedb.go
+++ b/db/hotimedb.go
@@ -460,15 +460,15 @@ func (that *HoTimeDB) Select(table string, qu ...interface{}) []Map {
 			v := testQuData[k]
 			switch Substr(k, 0, 3) {
 			case "[>]":
-				query += " LEFT JOIN " + Substr(k, 3, len(k)-3) + " ON " + v.(string)
+				query += " LEFT JOIN `" + Substr(k, 3, len(k)-3) + "` ON " + v.(string)
 			case "[<]":
-				query += " RIGHT JOIN " + Substr(k, 3, len(k)-3) + " ON " + v.(string)
+				query += " RIGHT JOIN `" + Substr(k, 3, len(k)-3) + "` ON " + v.(string)
 			}
 			switch Substr(k, 0, 4) {
 			case "[<>]":
-				query += " FULL JOIN " + Substr(k, 4, len(k)-4) + " ON " + v.(string)
+				query += " FULL JOIN `" + Substr(k, 4, len(k)-4) + "` ON " + v.(string)
 			case "[><]":
-				query += " INNER JOIN " + Substr(k, 4, len(k)-4) + " ON " + v.(string)
+				query += " INNER JOIN `" + Substr(k, 4, len(k)-4) + "` ON " + v.(string)
 			}
 		}
 	}
diff --git a/example/app/declare.go b/example/app/declare.go
index d151ee5..2382d5f 100644
--- a/example/app/declare.go
+++ b/example/app/declare.go
@@ -139,7 +139,7 @@ var DeclareCtr = Ctr{
 		//标签分析
 		if tags != nil {
 			for _, v := range tags {
-				dtag := that.Db.Select("declare_tag", Map{"[><]`declare`": "declare_tag.declare_id=declare.id"}, "declare_tag.declare_id", Map{"AND": Map{"OR": Map{"declare.policy_level": Slice{"省", "市"}, "declare.dispatch_department[~]": qu}, "declare_tag.tag_id": v}})
+				dtag := that.Db.Select("declare_tag", Map{"[><]declare": "declare_tag.declare_id=declare.id"}, "declare_tag.declare_id", Map{"AND": Map{"OR": Map{"declare.policy_level": Slice{"省", "市"}, "declare.dispatch_department[~]": qu}, "declare_tag.tag_id": v}})
 				for _, v1 := range dtag {
 					if declares[v1.GetCeilInt64("declare_id")] == nil {
 						declares[v1.GetCeilInt64("declare_id")] = v1