The generalized concept Qi is all the matters and energies existing in the universe. The main forms of Qi motions include opening， closing， going out ， coming in， gathering， scattering， and transforming of Qi. Ascending and descending of Qi are opening and closing in essence. The principles and methods for treating diseases can be created by understanding the laws of human body’s Qi motions in opening， closing， going out， coming in， gathering， scattering， and transforming.