Women with birth control rings have certain damage to the body, this damage is mainly reflected in the following two aspects: First, the birth control ring surgery process may cause damage, mainly because the surgical operation process is not thoroughly disinfected, may cause the uterine cavity infection, in the process of surgery may also be perforated uterus. If the surgical procedure is relatively smooth and the disinfection is done thoroughly, this injury can be avoided. Secondly, the patient may be allergic to the IUD or may not adapt to it, and may experience vaginal bleeding, abdominal cramps and back pain. If there is no improvement after three months of medication, the patient is not suitable to wear the IUD and the IUD needs to be removed.