diff --git a/frontend/src/business/components/track/case/components/TestCaseEdit.vue b/frontend/src/business/components/track/case/components/TestCaseEdit.vue
index 6a289f5443..e43b8a8e06 100644
--- a/frontend/src/business/components/track/case/components/TestCaseEdit.vue
+++ b/frontend/src/business/components/track/case/components/TestCaseEdit.vue
@@ -269,8 +269,8 @@ export default {
         type: [{required: true, message: this.$t('test_track.case.input_type'), trigger: 'change'}],
         testId: [{required: true, message: this.$t('commons.please_select'), trigger: 'change'}],
         method: [{required: true, message: this.$t('test_track.case.input_method'), trigger: 'change'}],
-        prerequisite: [{max: 300, message: this.$t('test_track.length_less_than') + '300', trigger: 'blur'}],
-        remark: [{max: 300, message: this.$t('test_track.length_less_than') + '300', trigger: 'blur'}]
+        prerequisite: [{max: 500, message: this.$t('test_track.length_less_than') + '500', trigger: 'blur'}],
+        remark: [{max: 500, message: this.$t('test_track.length_less_than') + '500', trigger: 'blur'}]
       },
       formLabelWidth: "120px",
       operationType: '',