diff --git a/SUBQHSE/FineUIPro.Web/common/mainProject.aspx.cs b/SUBQHSE/FineUIPro.Web/common/mainProject.aspx.cs
index c7c01ac..2a930dc 100644
--- a/SUBQHSE/FineUIPro.Web/common/mainProject.aspx.cs
+++ b/SUBQHSE/FineUIPro.Web/common/mainProject.aspx.cs
@@ -68,7 +68,7 @@ namespace FineUIPro.Web.common
 
                 //项目总工期
                 int projectDays = 0;
-                if (project.StartDate.HasValue)
+                if (project.StartDate.HasValue && project.EndDate.HasValue)
                 {
                     int pdays = (project.EndDate.Value - project.StartDate.Value).Days;
                     if (pdays >= 0)
@@ -77,7 +77,11 @@ namespace FineUIPro.Web.common
                     }
                 }
                 //合同倒计时
-                int endDays = (project.EndDate.Value - DateTime.Now).Days;
+                int endDays = 0;
+                if (project.EndDate.HasValue)
+                {
+                    endDays = (project.EndDate.Value - DateTime.Now).Days;
+                }
 
                 // 计算整改率
                 string hsseZGRate = "0";