The blind test score is low, and the school does not give a reply, so it is necessary to conduct a blind test. The purpose of blind review is to reduce the bias and discrimination of the judges and improve the fairness and objectivity of the review. The low number of blind marks is caused by the insufficient quality of papers. The school thinks that the thesis does not meet the requirements of defense, and it needs to be revised and resubmitted. After passing the blind review, it can be defended again.