diff --git a/app/hdl/hdl_set_center.go b/app/hdl/hdl_set_center.go
index 9d893d3..aa4ecd8 100644
--- a/app/hdl/hdl_set_center.go
+++ b/app/hdl/hdl_set_center.go
@@ -443,7 +443,7 @@ func AppletUnauthorized(c *gin.Context) {
 // @Router       /api/setCenter/share/index [GET]
 func ShareIndex(c *gin.Context) {
 	masterId := svc.GetMasterId(c)
-	userAppDomainDb := implement.NewUserAppDomainDb(db.DBs[masterId])
+	userAppDomainDb := implement.NewUserAppDomainDb(db.Db)
 	agent, err := userAppDomainDb.GetAppDomainByType("agent", masterId)
 	if err != nil {
 		e.OutErr(c, e.ERR_DB_ORM, err.Error())
@@ -454,10 +454,18 @@ func ShareIndex(c *gin.Context) {
 		e.OutErr(c, e.ERR_DB_ORM, err.Error())
 		return
 	}
+	agentDomain := ""
+	if agent != nil {
+		agentDomain = agent.Domain
+	}
+	mediumDomain := ""
+	if medium != nil {
+		mediumDomain = medium.Domain
+	}
 	e.OutSuc(c, md.ShareIndexResp{
 		MasterId:     masterId,
-		AgentDomain:  agent.Domain,
-		MediumDomain: medium.Domain,
+		AgentDomain:  agentDomain,
+		MediumDomain: mediumDomain,
 	}, nil)
 	return
 }