A variety of factors can cause back pain after miscarriage, some reasons need further treatment, can not be treated as the “root of the disease” without treatment, silently endured. There are many reasons for back pain after abortion, such as the increased uterus needs to be restored to its normal state after abortion, the uterine muscle fibers contract and stimulate the pelvic floor muscles and nerves, causing pain in the abdomen and lower back, which is a normal phenomenon, and usually the back pain can disappear after the uterus returns to its normal size. In addition, unclean abortion operation leads to residual pregnancy material causing lumbar discomfort; postoperative bruises are not eliminated smoothly and secondary infection causes pelvic inflammatory disease, resulting in lumbar pain; patients themselves have lumbar muscle strain and lumbar spine disease, and postoperative resistance decreases or long-term bed rest, resulting in lumbosacral muscle pain or lumbar spine disease aggravation. All of the above symptoms can be improved through symptomatic treatment, so they cannot be defined as the “root of the disease” and not treated. Depending on the symptoms of lumbar pain, the clinical treatment method is also different. If there is a residual abortion, it is necessary to remove the abortion. In addition, after abortion, women should pay attention to abdominal warmth, avoid overexertion, and strengthen nutrition, pay attention to the supplementation of vitamin-rich and high-quality protein food, and appropriate activities, in order to promote the body to recover as soon as possible.