Based on more than 20 years' research and clinical practice as well as based on the Traditional Chinese Medicine (TCM) theory, the author developed new concepts on TCM.These new concepts include:The Yin-Yang and Five-element theory is updated to Yin-Yang and Six-element theory.Under this new theory, wood, fire, • earth, metal, water, the traditional five elements in the TCM theory has been extended to six elements by adding the new element of Qi, which is called the new Wood-Fire-Earth-Metal-Water-Qi theory.