Sub-health in Chinese medicine belongs to the undiseased and needs to be regulated in time, which can play a role in preventing diseases. Sub-health refers to a state in the middle of disease and health, which is also known as undiseased in Chinese medicine, and manifests itself as a period of time with symptoms such as decreased function and reduced adaptability, such as memory loss, mood swings, lack of concentration, decreased responsiveness, decreased appetite, and fatigue. The occurrence of sub-health is mostly related to irregular diet, lack of physical exercise, frequent late nights and lack of sleep, long-term mental stress, etc., which need to be regulated in time. There is a saying in Chinese medicine that it is not to treat the disease, but to treat the disease before it occurs, and timely management of the disease before it occurs can prevent the disease and improve the prognosis of the disease. When the disease has occurred and then treatment, the degree of pain is higher, the treatment time is long, part of the disease has occurred and then go to the intervention has often missed the best opportunity for treatment, the prognosis is poor. The human body is in a state of sub-health can be adjusted under the guidance of a professional physician in a timely manner to adjust living habits, regular diet, appropriate physical exercise, relaxation, etc. to regulate, can be restored as soon as possible to good health, prevention of disease.