Different types of birth control devices have different placement time requirements, regardless of which type of birth control device, as long as the prescribed time is exceeded, the following different reactions may occur. 1, may lead to endometritis and other pelvic inflammatory diseases; 2, may appear the birth control device Ganton, such as the birth control device Ganton to the myometrium, in the removal may need to be combined with combined hysteroscopic surgery to remove; 3, the birth control device When placed for a long time, the position of the IUD may change, thus reducing the effect of contraception, and even the possibility of ectopic pregnancy, failing to achieve the expected contraceptive effect, and even more dangerous situations occur. Therefore, when the IUD has been in place for too long, it should be removed in a timely manner.