The theory of"yang transforming qi and yin to shape up body"plays an important guiding role in the occurrence and development aswell asdiagnosisand treatment of obesity.Thedeficiency of"yang transforming qi"and the excessiveness of"yin shaping up body"constitute the important causes of obesity.Therefore，it is the fundamental method of reinforcing the vital essence and strengthening the original qi，and tonifying yang and controlling yin to cure obesity，which should be used throughout the diagnosis and treatment of obesity.