Pelvic inflammatory disease after abortion is caused by the fact that the abortion procedure is performed inside the uterine cavity, which can lead to damage, bleeding and necrosis of the mucous membrane of the reproductive tract, which can cause endogenous pathogens from the vagina to enter the uterine cavity and cause infection. If the patient does not pay attention to hygiene after the procedure, bacteria may enter the pelvic connective tissue and other parts of the internal reproductive organs through the vulva, vagina, cervix and lymphatic vessels of the trauma, which may also lead to pelvic inflammatory disease. In addition, women’s body resistance is poor after abortion, so if there is any bacterial infection, they will easily get pelvic inflammatory disease. Therefore, women must pay attention to hygiene after abortion and can take anti-inflammatory drugs as a preventive measure.