Sub-health, a gray area between health and disease, is becoming more and more of a concern to modern people. Sub-health is like a spring that has been stretched, and once the tension is lifted, it can be restored to its original state and become healthy again, but if it is not taken seriously, once the elastic deformation range of the spring is exceeded, it will be difficult to restore the spring as before and health will be far away. As we all know, for subhealth western medicine can do nothing, but the advantages of Chinese medicine is highlighted, so how exactly does Chinese medicine regulate subhealth? 1, balance concept and sub-health Chinese medicine theory that a healthy person should be a balanced and coordinated organism, “Su Wen – angry through the day theory” has a text: “Yin and Yang secret, the spirit is to cure. If yin and yang are separated from the decision, the essence is extinct.” Here “Ping” and “Secret” both refer to balance, and the outline of yin and yang points out that balance is the root of “spiritual healing”, that is, physical and mental health. The “Su Wen – Regulating the Classic” also defines the term “Ping Ren”: “Yin and Yang are evenly balanced to fill their form, and the nine conditions are as one, and the name is Ping Ren.” The normal organism maintains the relative balance of yin and yang, qi and blood, and the rise and fall of the body within a certain limit through self-regulation. There is a certain limit of deviation, not into a significant disease state is sub-health. The concept of “balance of yin and yang is health” in the theory of Chinese medicine shows the direction for the treatment of sub-health. In order to achieve this, we should be careful to observe the location of yin and yang and adjust them, so as to achieve a peaceful period (Su Wen – Zhi Zhen Yao Da Lun).