Lower back pain after abortion is normal, abortion is to scrape off the endometrium under negative pressure suction. After abortion, the trauma of the uterine lining is large and the pain is severe, which can radiate to the waist and cause pain. The contraction of the uterus after abortion can also lead to lumbar pain, it is recommended to pay attention to rest after abortion, maintain sufficient sleep, avoid cold, exertion and strenuous exercise, eat more iron-rich foods, such as lean meat, chicken, eel, fungus, red dates, blood products, etc., and drink more warm and tonic soups. Prohibit basin bath and sexual life for 1 month, contraception within six months, 10 days after the review of the uterine adnexa ultrasound to see if there is any residue, review the leukorrhea routine for uterine cavity infection. If there is fever, severe abdominal pain, heavy vaginal bleeding, it is recommended to go to the hospital in time for examination and treatment.