Endometritis can cause adenomyosis. If endometritis is left untreated, it can cause damage to the uterine muscle lining over time, resulting in adenomyosis. Once endometritis is detected, it should be treated in time. Endometritis is caused by frequent abortions, multiple births, inappropriate uterine operations, inattention to hygiene during physiological period, and coitus during physiological period. Although adenomyosis is not endometritis, it can be caused by endometrial damage, resulting in the endometrium running into the myometrium to form. It can cause a woman to have heavier periods, an enlarged uterus, and progressive worsening of menstrual cramps. Although the two diseases have different causes, but there is a causal relationship, so for endometritis need to be effective anti-inflammatory treatment. Usually pay attention to personal hygiene, not to have intercourse during menstruation, and try not to eat cold, spicy and stimulating food.