diff --git a/app/Models/CourseContentEvaluationAsk.php b/app/Models/CourseContentEvaluationAsk.php
index d56e85d..e2d1c1c 100644
--- a/app/Models/CourseContentEvaluationAsk.php
+++ b/app/Models/CourseContentEvaluationAsk.php
@@ -4,11 +4,47 @@ namespace App\Models;
 
 class CourseContentEvaluationAsk extends SoftDeletesModel
 {
-    protected $casts = ['select_item' => 'json'];
+    protected $casts = [
+        'select_item' => 'json'
+    ];
 
     public function courseContent()
     {
         return $this->hasOne(CourseContent::class, 'id', 'course_content_id');
     }
 
+    /**
+     * 判断是否为多维度题目
+     * @return bool
+     */
+    public function isMultiDimension()
+    {
+        return $this->edit_input === 'multi_dimension';
+    }
+
+    /**
+     * 获取维度数据（访问器）
+     * 当题目为多维度题目时返回维度数据，否则返回空数组
+     * 注意：访问器会覆盖cast，所以需要手动处理JSON解码
+     * @return array
+     */
+    public function getDimensionsAttribute($value)
+    {
+        if ($this->isMultiDimension() && !empty($value)) {
+            // 手动处理JSON解码
+            return is_string($value) ? json_decode($value, true) : $value;
+        }
+        return [];
+    }
+
+    /**
+     * 设置维度数据（修改器）
+     * 将数组转换为JSON字符串存储
+     * @param mixed $value
+     */
+    public function setDimensionsAttribute($value)
+    {
+        $this->attributes['dimensions'] = is_array($value) ? json_encode($value, JSON_UNESCAPED_UNICODE) : $value;
+    }
+
 }
diff --git a/database/migrations/2026_01_13_094952_add_dimensions_to_course_content_evaluation_asks_table.php b/database/migrations/2026_01_13_094952_add_dimensions_to_course_content_evaluation_asks_table.php
new file mode 100644
index 0000000..dc25597
--- /dev/null
+++ b/database/migrations/2026_01_13_094952_add_dimensions_to_course_content_evaluation_asks_table.php
@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration {
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('course_content_evaluation_asks', function (Blueprint $table) {
+            $table->json('dimensions')->nullable()->comment('多维度题目的维度数据');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('course_content_evaluation_asks', function (Blueprint $table) {
+            $table->dropColumn('dimensions');
+        });
+    }
+};
+