diff --git a/Learun.Framework.Ultimate V7/Learun.Application.WebApi/Modules/TimeTable.cs b/Learun.Framework.Ultimate V7/Learun.Application.WebApi/Modules/TimeTable.cs
index 8157c1b0d..934781095 100644
--- a/Learun.Framework.Ultimate V7/Learun.Application.WebApi/Modules/TimeTable.cs	
+++ b/Learun.Framework.Ultimate V7/Learun.Application.WebApi/Modules/TimeTable.cs	
@@ -202,12 +202,15 @@ namespace Learun.Application.WebApi.Modules
                 // 校历
                 var entity = schoolCalendarIbll.GetSchoolCalendarEntityByNo(semesterAndYear.AcademicYearShort, semesterAndYear.Semester);
                 var StartTime = entity.StartTime.Value;
-                startDate = Common.CalculateFirstDateOfWeek(StartTime.AddDays(3)).ToString("yyyy-MM-dd");//StartTime.AddDays(((curWeek - 1) * 14)).ToString("yyyy-MM-dd");
-                if (Convert.ToDateTime(startDate) < StartTime)
+                //获取第几周
+                var curWeek = WeekOfYear(startdate, entity.StartTime.Value, entity.EndTime.Value);
+                ///获取当前周次开始时间
+                startDate = Common.CalculateFirstDateOfWeek(StartTime.AddDays(((curWeek - 1) * 14))).ToString("yyyy-MM-dd");
+                if (curWeek == 1 && Convert.ToDateTime(startDate) < StartTime)//判断第几周
                 {
                     startDate = StartTime.ToString("yyyy-MM-dd");
                 }
-                endDate = Common.CalculateFirstDateOfWeek(StartTime).AddDays(12).ToString("yyyy-MM-dd");
+                endDate = Common.CalculateFirstDateOfWeek(StartTime.AddDays(((curWeek - 1) * 14))).AddDays(9).ToString("yyyy-MM-dd");
                 param.StartDate = startDate;
                 param.EndDate = endDate;
             }
@@ -311,6 +314,37 @@ namespace Learun.Application.WebApi.Modules
             }
             return res;
         }
+        /// <summary>
+        /// 换算周次
+        /// </summary>
+        /// <param name="curDay"></param>
+        /// <param name="startTime"></param>
+        /// <param name="endTime"></param>
+        /// <returns></returns>
+        private static int WeekOfYear(DateTime curDay, DateTime startTime, DateTime endTime)
+        {
+            int firstdayofweek = Convert.ToInt32(startTime.DayOfWeek);
+            var startDate = DateTime.Parse(Common.CalculateFirstDateOfWeek(startTime).ToString("yyyy-MM-dd"));
+            int k = Convert.ToInt32(startTime.DayOfWeek);//得到开始时间的第一天是周几
+            int days = curDay.Subtract(startTime).Days;
+            //int days = curDay.DayOfYear;
+            int daysOutOneWeek = days - (14 - firstdayofweek);
+
+            if (daysOutOneWeek <= 0)
+            {
+                return 1;
+            }
+            else
+            {
+                int weeks = daysOutOneWeek / 14;
+                if (daysOutOneWeek % 14 != 0)
+                    weeks++;
+
+                return weeks + 1;
+
+            }
+
+        }
     }