Sudden cramps in the abdomen 7 days after abortion may be due to improper care, secondary infection, incomplete abortion, etc. They are usually accompanied by severe abdominal pain and long duration of abdominal pain. 1. Improper care: In general, the body can return to normal in 2 to 4 weeks after abortion, but some women are weak, if the postoperative care is not paid attention to, resulting in localized cold, nerve sensitivity, may feel colicky pain in the abdomen in the postoperative period of about 1 week. 2. Secondary infection: Because abortion is an invasive operation, the uterus is adjacent to the vagina and has a special location, it is easy to get secondary infection about 7 days after the operation, which will cause abdominal cramps and may be accompanied by fever, abnormal vaginal discharge and other abnormal symptoms. 3. Incomplete abortion: If the surgery fails to remove all the chorionic villi and meconium tissues from the uterine cavity, the uterus will contract in order to expel the remaining tissues after the surgery. The patient may experience sudden cramps in the abdomen and increased vaginal bleeding. It is recommended that women should rest properly after the operation, and it is best to avoid physical exercise for half a month. If there is sudden abdominal cramps 7 days after the abortion, it is recommended to consult a doctor in time, under the guidance of the doctor, improve the relevant examination, clarify the cause of the disease, and symptomatic treatment.