diff --git a/api/model/UserBehaviorRecord.go b/api/model/UserBehaviorRecord.go
index ea867d7..b07dfba 100644
--- a/api/model/UserBehaviorRecord.go
+++ b/api/model/UserBehaviorRecord.go
@@ -17,7 +17,7 @@ type UserBehaviorRecord struct {
 	EndTime    LocalTime `gorm:"column:end_time;type:datetime;comment:结束时间" json:"end_time"`
 	Model
 	Platform *Platform `gorm:"foreignKey:PlatformId;references:platform_id" json:"platform"`
-	Case     []*Case   `gorm:"foreignKey:CaseId;references:case_id" json:"case"`
+	Case     *Case     `gorm:"foreignKey:CaseId;references:case_id" json:"case"`
 	User     *User     `gorm:"foreignKey:UserId;references:user_id" json:"user"`
 }
 
diff --git a/api/service/export.go b/api/service/export.go
index 68e2307..1289302 100644
--- a/api/service/export.go
+++ b/api/service/export.go
@@ -306,7 +306,7 @@ func (r *ExportService) ExportUserRecord(userBehaviorRecords []*model.UserBehavi
 		}
 
 		if v.Case != nil {
-			userRecordData.CaseName = v.Platform.PlatformName
+			userRecordData.CaseName = v.Case.CaseName
 		}
 
 		if v.User != nil {