The thickness of the uterus depends on the thickness of the organ itself or the thickness of the lining of the uterus. In a normal adult woman, the length of the uterus is generally 7 to 8 centimeters, the width is 4 to 5 centimeters, and the thickness is 2 to 3 centimeters. The function of the uterus as an organ is to carry out menstruation and the role of the fetus. The thickness of the lining of the uterus varies from woman to woman at different times of the menstrual cycle, because menstruation is actually the shedding of the lining of the uterus. Usually the thickness of the endometrium is around 5 to 10 millimeters, preferably not less than 6 millimeters, before ovulation, that is, the proliferative phase of the endometrium thickness is generally around 6 to 8 millimeters, after ovulation to the period before menstruation, that is, secretory phase of the endometrium is generally around 8 to 10 millimeters, generally around 8 millimeters of the endometrium is conducive to conception, less than 6 millimeters of the endometrium means that it is thin, not easy to conceive, even if pregnancy is also easy to miscarry. Even if you get pregnant, you are prone to miscarriage. In short, if the thickness of the uterine organ is 2 to 3 centimeters is normal, if the endometrium can reach 8 to 10 millimeters before menstruation is also normal, more than 12 millimeters, the endometrium is thick.