It is a remedy for failed contraception and the main means of terminating an unwanted pregnancy. Abortion is an invasive procedure, which is done by negative pressure suction with scraping. The operation of surgical instruments will definitely cause damage to the endometrium, and multiple abortions will cause irreversible damage to the endometrium, such as thinning of the uterine wall, uterine perforation, post-operative bleeding and infection, uterine adhesions and other complications, and some patients will also need to have their uterus removed again due to improper handling of the abortion procedure, such as incomplete aspiration, which will have serious effects on the fertility of female patients and the damage is difficult to repair. Authoritative literature reports that the incidence of cavity adhesions due to multiple abortions and curettage is as high as 25-30% and has become the main cause of reduced menstrual flow, amenorrhea, and secondary infertility. Even if a fertilized egg is formed, the adhered uterine cavity will not allow the fertilized egg to be laid and developed. At present, there is no effective treatment for severe uterine adhesions to restore fertility and menstrual physiology; the re-adhesion rate after TCRA is as high as 62.5%, and the pregnancy success rate is only 22.5%~33.3%. Under normal conditions, the mucus of the cervical canal isolates the vagina and the uterine cavity, keeping the uterine cavity sterile. Once the tissue is traumatized during the operation, the aerobic bacteria in the mucous membrane of the cervical canal and the surface of the vaginal wall will multiply rapidly, creating a hypoxic state and anaerobic bacteria will proliferate, causing intrauterine infection and tubal infection, resulting in tubal congestion, edema, thickening of the fallopian tubes or proliferation of inflammatory granulation tissue, which in turn will narrow the lumen of the fallopian tubes unilaterally or bilaterally or cause obstruction. As a result, the tubal lumen is narrowed or obstructed unilaterally or bilaterally, making the fallopian tubes inaccessible and obstructing the movement of sperm or eggs, resulting in infertility. Even when the fallopian tubes are open, they may not be able to transport the fertilized egg to the uterine cavity due to peristaltic dysfunction caused by adhesions with the surrounding tubes, resulting in ectopic pregnancy. Therefore, it is important to raise the awareness of contraceptive education, strengthen the use of contraceptives, avoid abortion as much as possible, treat the inflammation of the reproductive tract in time and pay attention to the hygiene of sexual life in order to bring good pregnancy to everyone!