diff --git a/src/components/student/OnlineClassModelStudent.vue b/src/components/student/OnlineClassModelStudent.vue
index 66afe4ec..c385fd2c 100644
--- a/src/components/student/OnlineClassModelStudent.vue
+++ b/src/components/student/OnlineClassModelStudent.vue
@@ -264,8 +264,8 @@ watch(formData, () => {
 });
 
 const sysTypeOption1 = computed(() => store.state.content_type?.find(({ code }) => code == formData.value.sysType1));
-const sysTypeOption2 = computed(() => sysTypeOption1.value?.children?.find(({ code }) => code == formData.value.sysType2));
-const sysTypeOption3 = computed(() => sysTypeOption2.value?.children?.find(({ code }) => code == formData.value.sysType2));
+const sysTypeOption2 = computed(() => sysTypeOption1.value?.children ? sysTypeOption1.value?.children?.find(({ code }) => code == formData.value.sysType2) : {});
+const sysTypeOption3 = computed(() => sysTypeOption1.value?.children ? sysTypeOption2.value?.children?.find(({ code }) => code == formData.value.sysType2) : {});
 
 const { data: studentList, fetch: searchStu, total, loading } = usePage(STUDENT_LIST, searchParams, false);
 const { loading: stuAsyncLoading, start } = useAsyncStu(formData.value.id, props.type, searchStu);