Nowadays, the word “constitution” is very popular, and you can see “constitution identification” services in the streets, telling you whether you have “this constitution” or “that constitution”, whether you have an acidic constitution or an alkaline constitution, a cold constitution or a hot constitution, a yin constitution or a yang constitution. That kind of body”, is acidic body, or alkaline body; is cold body, or hot body; is partial Yin, or partial Yang …… but, if you ask “what is the body?” few people may be able to answer. In the spring of 2007, the first national (and global) treatment center was established, and I was so happy that I thought I could turn around and make a new start, but …… was fortunate enough to be the director of the first body type identification center. It is important to find out what “constitution is”! Although there are many different definitions of “constitution”, I found that after careful research, we all want to clarify “the essence, foundation and quality of our physical and mental health”. Therefore, it can be succinctly said that “constitution is the quality of the human body”. Then, “body quality identification” is the evaluation of the quality of the individual. This is a “big deal”, and it is important not to make a judgment by “just fooling around a bit”. Think about it, even to evaluate the quality of a product, there must be enough “convincing” evaluation indicators and systems, otherwise, by virtue of someone “look, touch, ask” to draw conclusions, is not “too arbitrary “too arbitrary”? How to carry out “physical identification”, how to evaluate the quality of someone, physical condition? In my opinion, at least the following four aspects should be included. This matter must be “rigorous” and “objective”. 1. What is the quality of the individual’s form and structure? For example, the individual’s body shape, body posture, the morphological structure of the heart, liver, spleen, lungs, kidneys and other important tissues and organs “normal”, even including some cells, genes, molecules and other finer structures. 2. What is the quality of the individual’s physiological functions? For example, the individual’s heart and lungs, digestion, excretion, sensation, movement, sexual life and other functions, as well as the individual’s strength, endurance, sensitivity, flexibility, coordination, etc. 3. What is the quality of the individual’s mental activities? Such as: the individual’s intelligence, thinking, emotions, mind, character, personality, cognitive power, control, tolerance, moral sense and other states of mental activity. 4. What is the quality of the individual’s adaptability? For example: the individual’s ability to adapt to the natural environment such as temperature, humidity, air pressure, and the individual’s ability to adapt to the social environment such as interpersonal relationships, role changes, and unexpected events. The above content is not my “closed door, imagination” out of thin air, is a comprehensive study, learning from the World Health Organization (WHO) and related Chinese and Western medicine monographs, papers on “personal physical and mental health assessment” and other discussions, summed up. I just did not submit or publish the paper later. I welcome those who are interested to study it in depth and systematically. In conclusion, I believe that the physical quality of an individual (personal quality) should include at least four components: “morphological structure,” “physiological function,” “mental activity,” and “adaptive capacity. “adaptability”. Moreover, these four aspects are like the “hardware”, “software”, “motivation” and “prevention” of a computer. “as a computer, mutual influence, mutual support, mutual constraints, mutual promotion.