Abstract:Objective：To analyze the medical adverse events reported by acertain hospital from 2017 to 2019，study the characteristics of adverse event reporting，and propose targeted improvement suggestions. Methods：Retrospective analysis was used to analyze the medical adverse event data reported by a certain hospital from 2017 to 2019. Results：Medical adverse events mainly occurred during normal shift hours，especially in the morning hours；the main occurrence area was the inpatient ward，and mostoccurin the operating room.Departments were common in general surgery，orthopedics，obstetrics and gynecology，ICU，pediatrics and other departments；the objects were concentrated for elderly patients，there are more men than women；most of the reporting personnel are those with junior or intermediate professional titles，and the doctors have the most medical adverse events；medical adverse events mainly occur in medical management，nursing management，medical technology management，and device management. Mainly Ⅲ and Ⅳ medical adverse events. Conclusion：Formulate management measures for medical adverse events and encourage the reporting of adverse events；strengthen the supervision of key departments and key links to reduce the occurrence of medical adverse events