Comparing the incidence of patient safety accidents in the recent three years, we found that: after the implementation of personnel management, improvement of the environment for medical treatment, education and training, safety concept and shift scheduling in hospitals and various medical, medical and technical and nursing units, the incidence of abnormal accidents did improve; As for falling accidents, why are they still not effectively reduced? We speculate that high turnover rate of nursing staff, delayed replacement of the urgent, the patient's own consciousness, or the patient's physical strength and other problems may be the cause of the accident.