The second delay in menstruation after abortion may be caused by another pregnancy, or it may be caused by ovarian endocrine dysfunction, or it may be caused by postoperative complications. If menstruation is delayed for more than a week, you must go to the gynecology department of the hospital, and ultrasound examination is needed to clarify the cause of the disease.1, pregnancy: coitus after abortion surgery, not good contraception, pregnancy again lead to menstruation delay. In this case, according to the patient’s wishes, to decide the next step in the diagnosis and treatment, it is generally recommended to continue the pregnancy, to avoid the short-term again abortion and damage to women’s health; 2, endocrine disorders: due to the work of the laborious, mental stress, life is tense, fast-paced and so on, can cause endocrine disorders, resulting in delayed menstruation. You can keep an optimistic mood, learn to relieve your stress, don’t be anxious, nervous, etc., and reduce negative emotions; 3. Post-operative complications: such as uterine adhesions, endometritis, adnexitis or pelvic inflammatory disease, etc., which may lead to post-operative amenorrhea or decreased menstrual flow, and delayed menstruation for the second time, and sometimes accompanied by cyclic pain in the lower abdomen or uterine enlargement and accumulation of blood. If there is abdominal pain and small amount of vaginal bleeding, it is necessary to go to the hospital for ultrasound examination as soon as possible, and according to the results of the examination, corresponding treatment will be carried out. After abortion, you need to use strict contraception to prevent another pregnancy; you should not take a basin bath to prevent water backflow and infection; pay attention to rest, avoid eating cold, spicy, stimulating food or contact with cold water; keep the perineum clean and hygienic to avoid infection of other inflammatory diseases; choose cotton underpants, wash and change them frequently, and do physical exercise appropriately.