Endometritis is related to IUD. IUD belongs to intrauterine operation, if the operation is not standardized or the sterilization of instruments is not qualified, it is easy to be infected by pathogenic bacteria, which in turn leads to endometritis. In addition, the IUD will also cause irritation to the endometrium, and long-term stimulation may also cause endometrial congestion and edema, leading to inflammation. Therefore, the occurrence of endometritis has a certain relationship with the ring. In addition to a certain relationship with the ring, endometritis is also related to puerperal infections, endometrial polyps, cervicitis, and low estrogen levels in the body. In the case of endometritis, you need to actively apply anti-inflammatory drugs anti-inflammatory treatment, with the use of medication, inflammation will gradually subside. And with the ring should also pay more attention, can not be too early coitus.