The vague pain in the abdomen 4 days after abortion may be mainly due to contraction of the uterus, which is a normal physiological phenomenon. There may also be abnormal phenomena, such as uterine residue, endometritis, pelvic inflammatory disease, the cause should be clarified after the corresponding treatment. A physiological phenomenon: physiological uterine contraction, 4 days after abortion, the uterus can appear physiological contraction to discharge the residual blood in the body, women can appear abdominal pain symptoms, this is a normal physiological phenomenon, no need for special treatment. 2, abnormal phenomena: 1, intrauterine residue: after abortion, if there is residual uterine cavity, can lead to the patient abdominal pain, should promptly go to the hospital to clear the uterine cavity residue; 2, endometritis: patients can appear abdominal pain symptoms, and can be accompanied by a small amount of vaginal bleeding, should follow medical advice to use cephalosporin, metronidazole and other anti-infection treatment; 3, pelvic inflammatory disease: due to pelvic fluid susceptible to bacterial infection. Patients with pelvic inflammatory disease should go to the hospital in time and use cephalosporins for treatment under the guidance of the doctor. If you do not pay attention to warmth after the abortion, resulting in abdominal cold, can cause the patient abdominal pain, then you can use hot towels for hot compresses to appropriate relief, the daily can drink the appropriate amount of ginger brown sugar water, light diet, avoid spicy, cold and other stimulating food.