Sub-health is an intermediate state between health and disease, and its development trend has two directions: if the body is in a long-term sub-healthy state and neglects to take care of it, it may lead to the occurrence of disease; while through reasonable intervention, the body can be restored to a healthy state. It can be seen that subhealth is also a special form of the so-called “unwellness” in Chinese medicine. The common feature of subhealth states is that patients have many abnormal manifestations and experiences, but the conventional physical and chemical examination methods cannot detect positive results, so it is difficult to make a diagnosis of disease. Subhealth has several major hazards from mild to serious: 1. Subhealth obviously affects work efficiency, life and learning quality; 2. The quality of sleep, aggravate physical and mental fatigue, and cause chronic fatigue syndrome. 3.Physical or psychological subhealth can easily affect each other, leading to a vicious circle and mental or physical disorders; 4.As subhealth is the pre-morbid state of most chronic diseases, most malignant tumors, cardiovascular and cerebrovascular diseases and diabetes are transferred from subhealthy people. Hyperlipidemia is the number one killer of sub-healthy people, fatty liver is the second, hypertension, prostate disorders, liver function abnormalities, gynecological disorders, coronary heart disease, diabetes, cataracts, gallbladder stones, cancer census abnormalities, etc. all threaten sub-healthy people to varying degrees; 5, serious sub-health can significantly affect the healthy life span, resulting in premature aging, and even sudden emergencies leading to premature death (overwork). Prevention of sub-health “cross” policy 1, “peace of mind”, that is, balanced psychology, calm mind, stable emotions; 2, “reduce stress”, that is, the appropriate time to relieve excessive tension and stress; 3. “Shun clock”, that is, to comply with the biological clock, adjust the rest and sleep; 4, “increase immunity”, through aerobic metabolic exercise and other enhance their immunity; 5, “improve”, that is, by changing 5, “improve”, that is, by changing the bad lifestyle and habits, from the source to block the occurrence of sub-health status.