In the process of re-execution, some hospitals did not communicate well with patients, and even opened inspection bills without the consent of patients, which led to the incomprehension and rejection of patients and their families. This is a pity, but preoperative examination can not only effectively guide clinical medical staff to take a series of targeted protective measures to protect medical staff from the risk of occupational exposure, but also remind medical staff to handle the instruments and materials used in the operation according to the relevant regulations of the Ministry of Health, and at the same time provide each patient with a clean and safe.