The following three reasons are mainly considered for the pain on the right side of the abdomen after abortion: firstly, the patient may have perforation of the uterus during the operation, which damages the intestines or local tissues. In this case, the pain will gradually worsen and may be accompanied by nausea, vomiting and abnormal urination and defecation. Gynecological ultrasound fluoroscopy or even laparoscopic exploration is needed to make a clear diagnosis. Second, consider the possibility of infection, infection can be both during the operation and postoperative infection. Patients are often accompanied by abnormal discharge, abdominal pain, low fever and so on. Through gynecological ultrasound, blood routine, C-reactive protein and gynecological internal examination and other related examinations can be clearly diagnosed. Thirdly, it should be considered that the patient may have intestinal problems after abortion, such as appendicitis, etc., which may also be related to diet or too much tension during the operation.