The basic theory of meridian science of traditional Chinese medicine tells us that "sufficient qi and blood can cure all diseases". Only sufficient qi and blood will be more conducive to the patency of the whole body's meridians. Sufficient qi and blood, smooth meridians, human organs can be well nourished and their functions can be enhanced. The dynamic balance between qi and blood, meridians and viscera is the real health state of human body. People who achieve such a healthy state have a very good internal environment and a strong immune system, which can not only clean up all kinds of toxins in the body in time, but also resist the invasion of foreign pathogenic factors. On the other hand, if a person is deficient in qi and blood, the meridians are blocked and the viscera function is weak, it will destroy the dynamic balance of the three or cause serious imbalance, thus forming a mess and the internal environment is riddled with holes. It is conceivable that such people have neither the power to clean up the toxins in the body in time nor the ability to resist the invasion of external pathogenic factors, thus becoming the root cause of the disease. Deficiency of qi and blood and obstruction of meridians are the root causes of diseases.