Curettage surgery may cause certain harm to the body if it is not operated properly, such as infection, endometrial damage, heavy bleeding, causing infertility and so on. 1. Infection: Curettage is an invasive surgery, if there is no good preparation for vaginal cleansing before curettage, women with poor physique and resistance, or improper care after curettage, it will cause bacterial infection and lead to inflammation. 2. Endometrial damage: If the basal layer of the endometrium is damaged, it will lead to a decrease in menstrual flow and even cause adhesions in the uterine cavity. If it damages the myometrial layer, it will lead to bleeding. 3. Heavy bleeding: During the process of scraping the uterus, there may be a lot of vaginal bleeding, which may also lead to anemia or even shock. 4. Causing infertility: when doing the scraping operation, if the operation is not done properly resulting in thinning of the uterine wall, it will affect the amount of women’s menstruation, leading to a decrease in the amount of menstrual blood or amenorrhea, causing infertility. If there is no requirement for childbearing, it is recommended to take contraceptive measures.