Endometrial calcification, its hazards are as follows: 1. It may cause endometrial thinning, which may affect normal conception, or cause miscarriage, stillbirth after conception, or placental implantation, placental abruption, and cause late postpartum bleeding. 2. Endometrial calcification, due to endometrial calcification, may affect the endometrial exfoliation of the functional layer, resulting in low menstrual blood volume, short periods, and scanty menstruation symptoms. Clinically, endometrial calcification occurs mostly due to inflammatory stimulation or repeated abortions and scrapings, causing calcification of the endometrium, which can be cured by surgical removal of the calcified foci.