1.Pregnant uterus: women of childbearing age with a history of menopause and a quick packet found in the lower abdomen should first be considered a pregnant uterus. 2, uterine fibroids: the uterus is uniformly enlarged, or there are single or multiple irregular bulges on the surface. The typical symptom of uterine fibroids is excessive menstruation. 3.Uterine gland disease: the uterus is uniformly enlarged and hard, usually not exceeding the size of the uterus at 12 weeks of gestation, and the patient mostly has obvious dysmenorrhea. 4.Uterine malformation: a mass on the other side of the uterus can be found in the double uterus or in the stump uterus, both are connected and have the same hardness. 5.Blood accumulation in the uterus and vagina or pus accumulation in the uterus: blood accumulation in the uterus or vagina is mostly caused by hymenal atresia or obstruction of outflow of menstrual blood caused by transverse vaginal septum. 6.Malignant tumor of uterus: perimenopausal patients with enlarged uterus and irregular vaginal bleeding should consider the possibility of endometrial cancer.