Nowadays, people in their thirties and forties are the main force of society, and they have to take up the double responsibility of family and society, which shows how much pressure they are under. In this age group, people are most likely to have “sub-health”. I believe we have all heard of the term “sub-health”, but we do not know much about it, nor do we know the damage it can do to the human body. What is sub-health? It refers to a state in which the human body is between health and disease. Sub-healthy people mainly include older people, people who are under long-term competitive pressure, and people with poor living and eating habits. The white-collar class is the main group of people in sub-healthy state. The causes of subhealth are mainly caused by unreasonable diet, lack of exercise, irregular work and rest, lack of sleep, mental tension, psychological stress, and long-term bad mood. Although subhealth is not considered a disease, it can be an early sign of disease, because there are many chronic diseases before the onset of the body will have some signs, these signs are the performance of subhealth state. Such as chest tightness, dizziness, fatigue, insomnia, etc., when these symptoms appear, we need to pay attention to. As we grow older, the body metabolism will slow down, and we will experience symptoms of aging such as memory loss, reduced adaptability, lower immunity, lack of physical strength and energy, which are also manifestations of sub-health. The low tide of the physiological cycle, even if the body is very healthy, there will be some manifestations of subhealth during this special period, such as women before the onset of menstruation will generally show emotional instability, irritability, easily agitated and so on, which is also a subhealth state. Nowadays, there is too much competition in society, which leads to overuse of brain, fatigue and even physical and energy overdraft, which often makes the body and mind seriously overloaded, and once the body cannot bear it, it will get sick. The problem of sub-health must be given sufficient attention, although not considered a disease, but if left unchecked, it will soon become a disease.