Bilateral femoral venous valvular insufficiency refers to the femoral venous valves’ incomplete closure leading to abnormal backflow, and the causes can be categorized into congenital and acquired causes. 1. Congenital factors: congenital abnormal development of deep vein valves, such as single leaflet, can lead to valve insufficiency in the later stage, or the valves are congenitally weak, easily under the impact of blood flow, resulting in valve relaxation, can not be tightly closed, will appear in the venous valve insufficiency, causing a series of local symptoms. 2. Acquired factors: Late due to long-term excessive blood volume, such as varicose veins, or persistent overload, resulting in venous lumen expansion, making the relative closure of the incomplete. Patients with bilateral femoral venous insufficiency need to be treated actively and standardized under the guidance of doctors, and patients with aggravated local symptoms need to seek timely medical treatment to avoid deterioration of the situation.