diff --git a/app/api/controller/StudentController.php b/app/api/controller/StudentController.php
index e0b5a06..34f7c30 100644
--- a/app/api/controller/StudentController.php
+++ b/app/api/controller/StudentController.php
@@ -100,7 +100,7 @@ class StudentController extends BaseController
                 'time_on' => $v['time'],
                 'subject' => $v['subject_name'],
                 'teacher_name' => $v['teacher_name'],
-                'time_num' => $v['hour'] + '/h',
+                'time_num' => $v['hour'] . '/h',
             ];
             $stu_nmae = $v['student_name'];
         }
diff --git a/app/api/controller/TeacherScheduleTimeController.php b/app/api/controller/TeacherScheduleTimeController.php
index f852d4e..e9ca02f 100644
--- a/app/api/controller/TeacherScheduleTimeController.php
+++ b/app/api/controller/TeacherScheduleTimeController.php
@@ -76,7 +76,7 @@ class TeacherScheduleTimeController extends BaseController
                 'subject' => $v['english_name'],
                 'teacher_name' => $v['teacher_name'],
                 'student_name' => implode(',', $student),
-                'time_num' => $v['hour'] + '/h',
+                'time_num' => $v['hour'] . '/h',
             ];
             $stu_nmae = $v['teacher_name'];
         }