Bleeding is heaviest on the first day after hysteroscopic curettage and usually lasts for 3 to 7 days. After hysteroscopic curettage, vaginal bleeding may occur. Vaginal bleeding is usually heavier on the first day after the procedure. However, the amount of bleeding after diagnostic scraping is usually not more than the amount of menstruation, and the bleeding time will last for 3~7 days. If the bleeding is heavy or lasts for too long, more than 7 days, it may be an abnormal manifestation. If the bleeding does not stop or is heavy after hysteroscopic diagnostic scraping, it is necessary to consider uterine infection or other diseases of the uterine cavity, and it is recommended to consult the doctor in time, improve the examination to clarify the cause, and then carry out targeted treatment and treatment.