Endometritis is a gynecological disease caused by a series of inflammatory changes in the lining of the uterus. Women with endometritis may experience pain in the pelvic area, lower abdominal cramps and lumbosacral pain during menstruation, and may also experience heavy menstrual periods and dysmenorrhea, but this usually does not affect the menstrual cycle. Endometrial inflammation may be caused when a woman’s body resistance drops or when pathogenic bacteria enter the uterine cavity, mainly due to upward infection by vaginal or cervical bacteria. It is commonly caused by incomplete abortion, retained placenta and fetal membranes after delivery, sexual intercourse during menstruation, prolonged uterine bleeding, abortion and various vaginal surgeries that cause upward infection. In a few cases, endometritis is also caused by tuberculosis. If endometritis is not treated in time, it may further develop into myometritis, salpingitis and pelvic inflammatory disease, and in severe cases, it may even cause infertility. The treatment for endometritis is mainly based on broad-spectrum antibiotics, and can be treated with oral levofloxacin, metronidazole, and third-generation cephalosporins. Women should not have sex during menstruation, do not have multiple abortions or induced abortions, pay more attention to personal hygiene, exercise, strengthen the body, try to avoid the occurrence of endometritis.