1.Mental factors: anxiety and tension after abortion may lead to endocrine disorders and delayed menstruation, it is recommended to maintain a positive and healthy state of mind after the operation, and family members should be more It is recommended to maintain a positive and healthy state of mind after the operation, and family members should give more care and comfort; 2. Pregnancy again: most patients resume ovulation about half a month after abortion, if a month and a half without menstruation and have sex, they may become pregnant again, and should do blood HCG, basal body temperature measurement and ultrasound Doppler examination, if there is no birth plan, it may be necessary to clear the uterus again; 3. The blood count and cervical smear should be checked, and oral cefuroxime and metronidazole should be taken as prescribed by the doctor. 4. Cervical adhesions: The cervical or endometrial lining may be damaged during uterine evacuation, which may cause adhesions and cause menstrual blood to accumulate in the uterine cavity during menstruation, resulting in non-menstruation and abdominal pain. Cervical dilatation can be used to restore patency; 5. Uterine adhesions: there can be amenorrhea with or without periodic abdominal pain after clearance, ultrasound and hysteroscopy are feasible to confirm the diagnosis, hormonal cycle therapy can be given to repair the endometrium, and hysteroscopic surgery to separate adhesions.