The common clinical causes of leg empty acid are mainly the following: First, after a lot of exercise, the patient can cause a large accumulation of lactic acid and metabolic waste in the legs, and cause local symptoms of soreness, the patient can promote faster absorption of lactic acid and metabolic waste through adequate rest, gua sha, moxibustion fumigation, and reduce the symptoms of leg space. Secondly, patients with varicose veins in lower limbs can’t participate in the whole body blood circulation faster due to the accumulation of venous blood, which can cause the soreness and discomfort in legs thus causing the symptoms of empty leg acid. If the symptoms are serious, surgery can be considered to remove the varicose blood vessels or inject sclerosing agent into the blood vessels to make them occlude by themselves. Third, patients with lower extremity venous thrombosis will also experience empty acidity due to obstruction of venous blood return and large amount of blood pooling in the superficial leg veins. Patients can wear elastic stockings on both lower extremities to promote blood return to reduce the performance of empty acid.