diff --git a/app/Http/Controllers/Mobile/CourseController.php b/app/Http/Controllers/Mobile/CourseController.php
index d3b9ca9..295e055 100755
--- a/app/Http/Controllers/Mobile/CourseController.php
+++ b/app/Http/Controllers/Mobile/CourseController.php
@@ -620,6 +620,9 @@ class CourseController extends CommonController
         // 获取打卡范围，千米
         $content_check_range = Config::getValueByKey('content_check_range');
         $course = Course::find($all['course_id']);
+        if (empty($course->longitude) || empty($course->latitude)) {
+            return $this->fail([ResponseCode::ERROR_BUSINESS, '请先设置课程经纬度']);
+        }
         $distance = getDistance($course->longitude, $course->latitude, $all['longitude'], $all['latitude']);
         if ($distance > $content_check_range) {
             return $this->fail([ResponseCode::ERROR_BUSINESS, '超出打卡范围']);