diff --git a/CoreCms.Net.Repository/IntelligentForms/CoreCmsFormSubmitRepository.cs b/CoreCms.Net.Repository/IntelligentForms/CoreCmsFormSubmitRepository.cs
index af6e3ec3..ed76dabb 100644
--- a/CoreCms.Net.Repository/IntelligentForms/CoreCmsFormSubmitRepository.cs
+++ b/CoreCms.Net.Repository/IntelligentForms/CoreCmsFormSubmitRepository.cs
@@ -189,7 +189,7 @@ namespace CoreCms.Net.Repository
                 .GroupBy(p => new { p.createTime, p.formId })
                 .Select(p => new FormStatisticsDto()
                 {
-                    day = SqlFunc.MappingColumn(p.createTime, "CONVERT(varchar(100), createTime, 111)").ToString(),
+                    day = p.createTime.ToString("yyyy-MM-dd"),
                     nums = SqlFunc.AggregateCount(p.id),
                     formId = p.formId
                 })