The anterior deviation of the uterus means that the position of the uterus belongs to the anterior position and is large in size. The position of the uterus is divided into anterior, median and posterior. The uterus is located in the middle of the pelvis, with the bladder in front and the rectum behind. Anterior position means that the uterus is tilted forward and lies on top of the bladder, which is a normal position of the uterus and usually does not affect the flow of menstrual blood, does not cause abnormal discomfort and does not affect conception. A large uterus refers to a large size and diameter of the uterus. Under normal circumstances, the uterus does not increase in size, but when a woman is pregnant, the growth and development of the embryo may cause the uterus to increase in size, which is a normal phenomenon. In addition, disease factors may also cause an enlarged uterus. If there are no clinical symptoms and no abnormal echogenicity of the myometrium, no special treatment is usually needed. If there is a combination of excessive menstrual flow, echogenicity of the myometrium or dysmenorrhea, it is abnormal. If the uterus is anteriorly enlarged and there is a history of gynecological inflammation, it may be caused by chronic inflammation of the uterine body. The long-term inflammatory response stimulates the uterus to enlarge, usually accompanied by dysmenorrhea, abnormal leucorrhea and other manifestations, which need to be combined with vaginal discharge examination and gynecological ultrasound and other examination results to clarify the cause of inflammation of the uterine body and targeted treatment with antibiotics. Anteriorly located large uterus combined with myometrial echogenicity and dysmenorrhea are often manifestations of adenomyosis. Mild adenomyosis that is asymptomatic does not require treatment. However, if adenomyosis is more severe and causes painful and unbearable menstruation, treatment such as the Mannakian ring or even surgical removal is required. An anteriorly located large uterus that does not show signs of adenomyosis but has excessive menstrual flow is also an abnormality and requires alternative treatment with short-acting contraceptives to reduce menstrual flow. In rare cases, the presence of fibroids should be considered if the uterus is anteriorly large and an abnormal echogenic mass, which may be a bright spot or a dark area, is visible under ultrasound. If the fibroids are large or numerous, or if there is already significant discomfort, surgical treatment may be indicated.