diff --git a/app/Http/Controllers/Admin/OtherController.php b/app/Http/Controllers/Admin/OtherController.php
index bf7c11c..99f5a98 100755
--- a/app/Http/Controllers/Admin/OtherController.php
+++ b/app/Http/Controllers/Admin/OtherController.php
@@ -219,7 +219,7 @@ class OtherController extends CommonController
      */
     public function coursesHome()
     {
-        $start_date = request('start_date', '2020-01-01');
+        $start_date = request('start_date', CourseType::START_DATE);
         $end_date = request('end_date', date('Y-m-d'));
         $course_type_id = request('course_type_id', '');
         if ($course_type_id) {
@@ -230,10 +230,7 @@ class OtherController extends CommonController
             $course_type_id = CourseType::pluck('id')->toArray();
         }
         // 课程
-        $courses = Course::whereIn('type', $course_type_id)
-            // ->where('start_date', '<=', $end_date)
-            // ->where('start_date', '>=', $start_date)
-            ->get();
+        $courses = Course::whereIn('type', $course_type_id)->get();
         // 被投企业数
         $list['course_signs_invested'] = CourseSign::yhInvested($start_date, $end_date);
         // 报名人数
@@ -246,19 +243,13 @@ class OtherController extends CommonController
         $calendar = Calendar::whereIn('course_id', $courses->pluck('id'))->whereBetween('date', [$start_date, $end_date])->get();
         $list['course_total'] = $calendar->count();
         // 开课天数
-        $list['course_day_total'] = $calendar->sum(function ($course) {
-            $start = Carbon::parse($course->start_time);
-            $end = Carbon::parse($course->end_time);
-            return $end->diffInDays($start) + 1; // 包含起始和结束日期
-        });
+        $list['course_day_total'] = $calendar->sum('days');
         // 课程分类明细统计
         $courseTypesSum = [];
         $courseTypes = CourseType::whereIn('id', $course_type_id)->get();
         foreach ($courseTypes as $courseType) {
             // 获取课程
             $courses2 = Course::where('type', $courseType->id)
-                //  ->where('start_date', '<=', $end_date)
-                //  ->where('start_date', '>=', $start_date)
                 ->get();
             foreach ($courses2 as $course) {
                 $courseTypesSum[] = [
diff --git a/app/Models/CourseSign.php b/app/Models/CourseSign.php
index 32dc1b9..36c9f76 100755
--- a/app/Models/CourseSign.php
+++ b/app/Models/CourseSign.php
@@ -146,18 +146,11 @@ class CourseSign extends SoftDeletesModel
     /**
      * 指定时间内的被投企业
      */
-    public static function yhInvested($start_date, $end_date, $status = null, $course_ids = null)
+    public static function yhInvested($start_date, $end_date)
     {
         $courseSignByType = CourseSign::whereDate('created_at', '>=', $start_date)
             ->whereDate('created_at', '<=', $end_date)
-            ->where(function ($query) use ($status, $course_ids) {
-                if (isset($status)) {
-                    $query->where('status', $status);
-                }
-                if (isset($course_ids)) {
-                    $query->whereIn('course_id', $course_ids);
-                }
-            })->whereNotIn('status', [4, 5])
+            ->whereNotIn('status', [4, 5])
             ->get();
         return Company::whereHas('users', function ($query) use ($courseSignByType) {
             $query->whereIn('id', $courseSignByType->pluck('user_id'));