There are various causes of an enlarged uterus, and it depends on what causes it in order to treat it properly. A normal physiological cause of an enlarged uterus is pregnancy, and an enlarged uterus is a pregnant uterus. This is a normal phenomenon, after the woman has given birth, the uterus will slowly contract until it returns to its original form. Uterus enlargement pathological reasons are generally the following: 1, uterine fibroids: uterine fibroids will make the uterus larger, multiple fibroids will make the uterus larger and irregularly shaped; fibroids degeneration when its volume will suddenly increase, or accompanied by pain. It can be diagnosed by doing abdominal ultrasound. 2.Uterine hypertrophy: in this case, the enlarged uterus is harder and often has a history of multiple births or multiple abortions. 3, functional uterine bleeding: pre-menopausal functional uterine bleeding also increases the size of the uterus, but it is often slightly enlarged and the uterus is homogeneous. 4, adenomyosis: this is because the endometrium to the middle of the myometrium growth and make the uterus enlarged, especially in the menstrual period the uterus enlargement more obvious, and accompanied by severe dysmenorrhea, in addition to the examination of the uterus often hard texture, activity is also poor. If there are pathological reasons caused by the above, you must go to the hospital for examination and early treatment to avoid delaying the condition.