This paper summarizes national Chinese medical science master Liu Zuyi’s academic experience in treating neurologic impairment following brain injury from mutual promotion between yin and yang in brain marrow. It is considered that kidney is closely related to the growth and development of brain marrow,among,the promotion of kidney yang is crucial. Marrow depletion due to kidney deficiency is the pathological basis of central neurologic impairment,and yang qi is the key to the growth and development. According to the characteristics of brain governing spirit and yang qi regulating function,the viewpoint of “mutual promotion between yin and yang in brain marrow” is put forward,and the therapy of benefiting qi and warming yang,nourishing marrow and dredging collateral is used in the treatment of neurologic impairment following brain injury.