An abortion is a procedure that removes pregnancy tissue using a metal suction tube connected to a negative pressure suction device. Although it is a minor outpatient procedure, it is not a simple task to get the scale right every time. If the gestational sac is too small, it is easy to miss the aspiration; if it is too big, it is easy to bleed a lot and the abortion is incomplete; if there is a little residue, it may cause incomplete abortion and vaginal bleeding; if there is excessive scraping or multiple operations, it may cause damage to the endometrium, low menstrual flow and adhesions in the uterine cavity, leading to amenorrhea and infertility, etc. Even if an experienced doctor has abnormal uterine morphology, inflammation, history of multiple abortions, history of cesarean section, etc., adnexitis, incomplete abortions, perforation may occur, resulting in future menstrual disorders or even amenorrhea, infertility, ectopic pregnancy, endometriosis, etc., and other serious occurrences. Therefore, we advise you to make sure to do a good job of contraception and protect yourself, not for the sake of others, but for yourself!