Prolonged sitting can affect the venous blood flow back to the lower extremities, resulting in swelling of the lower legs. First of all, the limb should be elevated, which can promote venous blood circulation and reduce the symptoms of swelling. You can wear compression stockings and perform calf gastrocnemius contraction exercises to improve the symptoms of discomfort. In severe cases, if the varicose veins of the lower extremities are complicated by the formation of a visible varicose vein mass, the option of injecting sclerosing agents into the vein mass can also provide relief. In severe cases of varicose veins, surgical treatment is required to remove the vein masses. Physical exercise can also improve the local blood circulation. In addition, it is to improve the bad habits of life or work, long hours of sitting or upright labor, should pay attention to proper regulation.