Low menstrual flow after abortion is usually due to endocrine disorder, thin endometrium, uterine adhesions, gynecological inflammation and other reasons. It is necessary to go to the hospital to improve the relevant examination to clarify the disease and then carry out treatment.1. Endocrine disorder: after abortion surgery, due to factors such as anxiety, uneasiness and other bad emotions or irregular work and rest, it will lead to endocrine disorder, resulting in early or postponed periods and low menstrual blood. Therefore, attention should be paid to ensure adequate rest, pay attention to a light diet, avoid eating cold and stimulating food, and also to ensure a relaxed mood; 2, thin endometrium: abortion surgery will to some extent lead to damage to the endometrium, the endometrium is too thin will lead to a low amount of menstrual blood, can be under the guidance of doctors by taking estrogen to promote the growth of the endometrium, so that the amount of menstrual blood back to normal; 3, uterine cavity Adhesions: After abortion, the destruction of the endometrium will cause adhesions in the uterine cavity and cervical canal, resulting in the inability to discharge menstrual blood smoothly and reducing the amount of menstrual blood. Hysteroscopic separation of uterine adhesions can be performed to restore normal menstrual flow after surgery. 4. Gynecological inflammation: After abortion, bacterial upstream infection can easily cause gynecological inflammation, such as cervicitis and endometritis, which can also lead to low menstrual flow and accompanying symptoms such as abnormal leucorrhea and abdominal pain. You can use metronidazole tablets and mycophenolate tablets for treatment under the guidance of a doctor; 5. Uterine cavity residue: failed abortion or unclean intraoperative clearance, resulting in post-operative residual pregnancy capsule, can also appear a period of post-operative vaginal bleeding, rather than menstruation, need to go to the hospital in a timely manner. One month after the abortion, you need to go to the hospital to review the ultrasound, through which you can observe the situation in the uterine cavity and exclude incomplete suction or residual pregnancy tissue.