Qi-invigorating is a method used for treating qi-deficiency syndromes. Qi-deficiency is mostly related with the intal organs of the hmg and spleen.Qi of the human body originates from the middle energizer and is dominated by the lung. It defends the superficial part of the body exteriorly, connects with the blood vessels interiorly, and keeps circulating in terms of ascending, descending, coming in and going out. Since the lung dominates the skin and hair, and the spleen dominates the four limbs, the lung and spleen are closely related with the skin diseases.