Chinese medicine believes that qi is a substance that constitutes the human body and maintains human life activities, with strong vitality, unceasing movement and extreme subtlety, and is the unity of vital substances and physiological functions. It is the unity of vital substances and physiological functions. It has the roles of promoting and regulating, warming and cooling. In Chinese medicine, qi can be divided into yuan qi, wei qi, ying qi, zong qi and so on. Yuan qi is the most fundamental and important qi of the human body, and is the driving force of human life activities. The theory of Chinese medicine is that Yuan Qi comes from the essence of the innate and the essence of the water and grains of the latter. Wei qi is born in the water and grain, originating from the spleen and stomach, out of the upper jiao, traveling outside the vein, its nature is strong, running quickly and fluently, with warmth and nourishment inside and outside, guarding the surface of the muscle, resisting external evil, nourishing the couper (pores), open and close the sweat pore and other functions. Ying Qi is the gas that travels in the vein and has a nutritive effect. Because it is rich in nutrients and operates endlessly in the vein, it is called Ying Qi. Since Ying Qi is in the veins, it is an important part of the blood, and the relationship between Ying and blood is close and inseparable, so it is often referred to as “Ying and Blood”. Zongqi accumulates in the chest, which is made up of the clear qi inhaled by the lungs from nature and the essence of water and grains produced by the spleen and stomach from the transportation of food and drink as its main components, combining with each other. Qi in Chinese medicine has the roles of promotion and regulation, warmth and coolness, defense, intermediary, and consolidation. Qi runs unceasingly, promoting and regulating the metabolism in the human body and sustaining the life process of the human body. The cessation of qi movement means the end of life.