The benefits of strong cardiorespiratory fitness are manifested in the following ways: lower incidence of cardiovascular diseases, increased resistance of the whole body, and high exercise potential. 1. Incidence of cardiovascular diseases:The heart is the core part of the blood system and plays the role of blood pump. With strong cardiopulmonary capacity, the incidence of cardiovascular diseases is low. 2. Enhancement of systemic resistance: strong cardiopulmonary function, the cardiovascular system and respiratory system such as life support system function is strong, resistance is naturally strong, able to resist more external injurious stimuli, can reduce the disease. The metabolism of the organs increases accordingly, always maintaining the body in a good state. 3. Great potential for exercise: the body’s metabolism accelerates during exercise, requiring the lungs to inhale more oxygen and the heart to pump more blood to supply the body’s needs. Only a strong cardiorespiratory fitness can meet the requirements of high-load exercise. Cardiorespiratory fitness has other benefits, usually we have to strengthen the cardiorespiratory exercise, especially aerobic exercise, while regular physical examination, early detection of problems, early treatment.