The most common reasons for the formation of uterine varicose veins are related to pregnancy, such as increased blood volume, fetal compression of blood vessels or abnormal hormone secretion, but also seen in the case of some diseases, the common causes and treatment are as follows: 1, pregnancy factors: 1, increased blood volume: after pregnancy, the blood volume of the uterus and ovaries increases, resulting in higher central venous pressure, which causes the original closed venous valves to open, resulting in blood reflux, thus 2, fetal compression of blood vessels: after pregnancy, with the growth of the fetus, the uterus gradually increases and thus compresses the inferior vena cava, resulting in obstruction of the inferior vena cava reflux, causing an increase in venous pressure, resulting in uterine varicose veins; 3, abnormal hormone secretion: during pregnancy, the level of estrogen and progesterone increases significantly, which inhibits the contraction of venous smooth muscle and also causes venous dilatation, making the venous valves closure is incomplete, resulting in blood backflow, thus triggering varicose veins in the uterus. Varicose veins during pregnancy do not have a significant impact on women’s health and the nutrition supply of the fetus, and women can recover naturally after childbirth, and generally do not need to be treated and handled. Second, disease factors: some congenital weakness of the venous valves or tumors and other occupational lesions can also lead to uterine varicose veins, need to improve the examination to confirm the diagnosis, under the guidance of the doctor symptomatic treatment.