One month after the abortion, hidden pain in the abdomen can be seen in many cases, but in the clinic, the most common cases are as follows: 1, about a month after the abortion, the patient is about to have menstruation, so there is hidden pain in the abdomen. The uterus is congested before the onset of menstruation, so most patients will feel the abdominal swelling and pain, which is a normal clinical manifestation.2. Consider that the patient has the adhesion of the endometrium and the cervical canal, and the menstrual blood can’t go down normally when the woman comes to have menstruation, so there will be pain in the abdominal cavity. In this case, the patient can not menstruation, do ultrasound shows that there is fluid in the uterine cavity, can do cervical dilatation surgery for treatment. 3, to consider that the patient has a pelvic infection leading to abdominal pain, do gynecological internal examination of the uterine body pressure pain or bilateral adnexal thickening and pressure, accompanied by an increase in vaginal secretions, the need for anti-inflammatory treatment. 4, to consider that the patient is a disease of the gastrointestinal function or the urinary system diseases, resulting in the Hidden pain in the abdomen is not related to the uterus and adnexa of women.