There is a small amount of brown discharge after 22 days of abortion clearance, which may be related to the onset of menstruation, uterine cavity residue, drug causes and so on. 1. The onset of menstruation: some women have a better recovery of the uterine lining after the purging operation. Menstrual flow may occur, initially the blood volume is relatively small, may show brown discharge. 2. Uterine residue: If women do not have a review after the purging operation, there may be substances left in the uterus, and the necrosis of the residual tissues can affect the repair of the uterine lining. When bleeding is caused by exercise or other stimuli, it can be manifested as a sudden brown discharge. 3. Drugs: If you take short-acting contraceptives such as drospirenone ethinyl estradiol tablets orally after the purging operation. This may cause irregular vaginal bleeding due to the side effects of the drug. There may also be brown discharge. After 22 days of abortion, when there is an abnormal discharge, it is recommended to consult a doctor in a timely manner, follow the doctor’s instructions for further examination, with the help of the doctor to clarify the cause, and targeted treatment or treatment.