Essence is a Chinese medicine term, from the theory of Chinese medicine is the three main elements of human life, is the human spirit and strength, plays an extremely important role in human life activities. In the broad sense, essence refers to the material basis that constitutes the human body and maintains its life activities, and in the narrow sense, it refers to the essence stored in the kidney, i.e., renal essence. God in the broad sense means that God is the supreme commander of all life activities such as spirit, will, perception and movement. It includes activities such as soul, prana, intention, will, thought, consideration, and intellect, through which one’s health can be manifested. Qi is the driving force of life activities, is the most basic substance that constitutes the human body and maintains human life activities, is the invisible state, constitutes the basic invisible elements of human life activities. Essence, Qi and Shen are inseparable, interdependent and mutually useful, they are the essence of life, and they coordinate with each other to maintain normal life activities, which are reflected in various life phenomena of the human body.