Chronic venous insufficiency is characterized by high incidence, difficult treatment and high recurrence rate. Traditional Chinese Medicine Preventive Treatment Theory is one of the important core contents in the theory of TCM. By using the theory of Traditional Chinese Medicine Preventive Treatment, using the theory of “prevention before illness,prevention the disease continues to change and prevention repeated when the disease has been cured”, can reduce the incidence rate effectively, improve the effect of clinical treatment, it is also to enrich and develop the theory of Traditional Chinese Medicine Preventive Treatment.