The normal thickness of the endometrium is between 1 and 10 mm, and it usually reaches 10 mm before menstruation with the change of menstrual cycle. Scraping is the only way to improve the patient’s symptoms, otherwise it may lead to heavy vaginal bleeding and even anemia and shock. Patients should rest for 1-3 days after curettage, eat a light diet, and pay attention to personal hygiene to keep the vulva breathable and clean to avoid bacterial infections.