Medical errors are difficult to avoid and can occur at any stage of the health examination and treatment process. The objective of this study is to describe the medical errors that occurred in the anesthesiology and resuscitation department of Hai Phong Hospital of Obstetrics and Gynecology during 2023 and the first six months of 2024. A descriptive study using retrospective data with 24 reports of medical errors occurring in the department, from January 1st 2023 to June 30th 2024, as well as 3 secondary reports on medical errors occurring at the hospital every six months. The data collection and analysis period were from May 2024 to September 2024 at Hai Phong Hospital of Obstetrics and Gynecology. The results indicate that 23 out of 24 errors were related to medical equipment and infrastructure, categorized as level B, which did not affect the patients. One error, classified as level H, was due to a patient reacting to a blood product and required intervention to save the patient’s life.