diff --git a/src/server/db/Mysql.go b/src/server/db/Mysql.go
index 5845af96..91249688 100644
--- a/src/server/db/Mysql.go
+++ b/src/server/db/Mysql.go
@@ -417,7 +417,7 @@ func GetServerMailData(data *[]*SqlServerMailStruct) error {
 }
 
 func GetActivityData(data *[]*SqlActivityCfgStruct) error {
-	sql := "select `id`, `type`, `title`, `mail_title`, `mail_content`, `level_limit`, `start_time`, `end_time`, `cfg_buf`, `extra`, `interval` from t_activity_mod"
+	sql := "select `id`, `type`, `title`, `mail_title`, `mail_content`, `level_limit`, `start_time`, `end_time`, `cfg`, `extra`, `interval` from t_activity_mod"
 	err := SqlDb.Select(data, sql)
 	return err
 }
diff --git a/src/server/db/SqlStruct.go b/src/server/db/SqlStruct.go
index c7135689..b9e2d473 100644
--- a/src/server/db/SqlStruct.go
+++ b/src/server/db/SqlStruct.go
@@ -506,7 +506,7 @@ type SqlActivityCfgStruct struct {
 	Level       int    `db:"level_limit"`
 	Start_time  int64  `db:"start_time"`
 	End_time    int64  `db:"end_time"`
-	Cfg         []byte `db:"cfg_buf"`
+	Cfg         string `db:"cfg"`
 	Interval    int64  `db:"interval"`
 	Extra       string `db:"extra"`
 }
diff --git a/src/server/game/activity_mgr.go b/src/server/game/activity_mgr.go
index 4b26b1de..ff8ab603 100644
--- a/src/server/game/activity_mgr.go
+++ b/src/server/game/activity_mgr.go
@@ -12,7 +12,7 @@ import (
 
 	"gitea.bywaystudios.com/pet_home/leaf/log"
 
-	"google.golang.org/protobuf/proto"
+	"google.golang.org/protobuf/encoding/protojson"
 )
 
 type ActivityMgr struct {
@@ -155,21 +155,21 @@ func unmarshalActivityCfg(atype int, buf []byte) (interface{}, error) {
 	switch atype {
 	case 1:
 		cfg := &protoMsg.MiningCfg{}
-		err := proto.Unmarshal(buf, cfg)
+		err := protojson.Unmarshal(buf, cfg)
 		if err != nil {
 			return nil, err
 		}
 		return cfg, nil
 	case 9:
 		cfg := &protoMsg.ChampionshipCfg{}
-		err := proto.Unmarshal(buf, cfg)
+		err := protojson.Unmarshal(buf, cfg)
 		if err != nil {
 			return nil, err
 		}
 		return cfg, nil
 	case 10:
 		cfg := &protoMsg.CatReturnGiftCfg{}
-		err := proto.Unmarshal(buf, cfg)
+		err := protojson.Unmarshal(buf, cfg)
 		if err != nil {
 			return nil, err
 		}