The theoretical system of Chinese medicine is huge and complex, and popularity of blood deficiency is only a specific manifestation of a certain stage of disease, not a general term for various diseases, and deficiency belongs to a part of the eight-pronged identification system. Deficiency belongs to the eight-pronged identification, eight-pronged identification includes “surface, inside, cold, heat, deficiency, real, yin, yang,” eight platforms, is the complexity of the evidence of a variety of generalizations. Deficiency refers to the deficiency of yin and yang, qi and blood, fluid and essence of the human body, with “insufficiency, flaccidity, decline” as the main symptoms; solid refers to the human body to feel the external evils, the accumulation of pathological products in the body, with “surplus, hyperactivity, stagnation and aggregation” as the main symptoms. Gas and blood are the basic substances that constitute the human body and maintain human life activities, occupies a very important position in human life activities, gas on the human body to promote and regulate the role of warmth and cool moisturizing effect, defensive role, solidifying the role of the role and intermediary; blood on the human body to have a moisturizing effect and the role of the chemical God. Qi and blood deficiency is only one of the many types of Chinese medicine, the human body is a complex complex, can not use a certain type of Chinese medicine to generalize all the types, and thus identification and typing is the most important basis for Chinese medicine treatment.