diff --git a/app/Http/Controllers/Admin/OtherController.php b/app/Http/Controllers/Admin/OtherController.php
index 5a5d2b5..029bef6 100755
--- a/app/Http/Controllers/Admin/OtherController.php
+++ b/app/Http/Controllers/Admin/OtherController.php
@@ -235,7 +235,7 @@ class OtherController extends CommonController
                 ->orWhereBetween('end_time', [$start_date, $end_date]);
         })->where(function ($query) use ($courses) {
             if (request('course_type_id')) {
-                $query->whereIn('course_id', $courses->pluck('id'));
+                $query->whereIn('course_type_id', request('course_type_id'));
             }
         });
         $list['course_total'] = (clone $calendar)->count();
@@ -732,7 +732,7 @@ class OtherController extends CommonController
                 $calendars = Calendar::whereBetween('date', [$start_date, $end_date])
                     ->where(function ($query) use ($course_ids) {
                         if (request('course_type_id')) {
-                            $query->whereIn('course_id', $course_ids);
+                            $query->whereIn('course_type_id', request('course_type_id'));
                         }
                     })->where('is_count_days', 1)
                     ->with('course')
diff --git a/app/Models/Calendar.php b/app/Models/Calendar.php
index 9cde227..e9bd64f 100755
--- a/app/Models/Calendar.php
+++ b/app/Models/Calendar.php
@@ -47,5 +47,10 @@ class Calendar extends SoftDeletesModel
         return $this->hasMany(HistoryCourse::class, 'calendar_id', 'id');
     }
 
+    public function courseType()
+    {
+        return $this->belongsTo(CourseType::class, 'course_type_id', 'id');
+    }
+
 }
 
diff --git a/database/migrations/2025_11_27_110000_add_course_type_id_to_calendars_table.php b/database/migrations/2025_11_27_110000_add_course_type_id_to_calendars_table.php
new file mode 100644
index 0000000..aebf023
--- /dev/null
+++ b/database/migrations/2025_11_27_110000_add_course_type_id_to_calendars_table.php
@@ -0,0 +1,35 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class AddCourseTypeIdToCalendarsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('calendars', function (Blueprint $table) {
+            $table->unsignedBigInteger('course_type_id')->nullable()->after('id')->comment('课程类型ID');
+            $table->index('course_type_id');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('calendars', function (Blueprint $table) {
+            $table->dropIndex(['course_type_id']);
+            $table->dropColumn('course_type_id');
+        });
+    }
+}
+