The main point of the Yellow Emperor’s Classic of Health is the balance of yin and yang, only the balance of yin and yang people will be healthy, yin and yang imbalance people will be sick. Therefore, the balance of yin and yang is the root of life vitality. The balance of yin and yang means that the transformation of both yin and yang is coordinated, neither too much nor too bad, showing a coordinated state. The balance of yin and yang is the foundation of vitality. If yin and yang are in balance, people will be healthy and have a spirit; if yin and yang are out of balance, people will become ill, prematurely decline, or even die. Therefore, the purpose of health care is to maintain the balance of yin and yang in life. The balance of yin and yang is not static and absolute, but relative and dynamic. This balance needs to be taken care of, once the health care is not careful, it will easily lead to imbalance of yin and yang and endanger health. The four characteristics of balanced yin and yang are: sufficient qi and blood, abundant energy, well-being of the five organs, and a glowing face. The three specific manifestations of balanced yin and yang are strong vitality, good physiological function, and strong mental capacity. To be more specific, it means being able to eat, sleep, look good, be happy, be full of energy and have a strong emergency response. The Chinese medicine treatment is through the dialectic treatment, clear body is which organ or which part of the yin and Yang imbalance, and then use drugs to correct the yin and Yang bias or decline, so that the body yin and Yang to restore balance, the disease can be good.