The time of menstruation after abortion is related to the individual’s physical condition, the number of days of pregnancy, the recovery situation, etc., and needs to be analyzed on a case-by-case basis. Generally speaking, the ovaries can resume normal ovulation function about 2-3 weeks after abortion, and the thickened uterine lining will be shed to form menstruation about 2 weeks after ovulation, so menstruation can be resumed usually about 4-6 weeks after abortion. However, if the patient is weak, the ovaries and uterus recover slowly, and the pre-pregnancy menstrual cycle is long, the recovery of menstruation may be delayed. In addition, if the abortion is performed at a larger gestational period, the endometrial damage is relatively heavy and the recovery time will be delayed accordingly. After abortion, you need to closely observe the bleeding situation, including bleeding time, bleeding volume and accompanying symptoms, etc. If there is any abnormality such as severe abdominal pain, you should go to the obstetrics and gynecology department of the hospital immediately for examination and treatment.