ABSTRACT
Why TCM thought orientation pays attention to time and Yang Qi is concerned with Yin Yang spatial-temporal evolution rules. The sky and the earth are the macrocosmos, the human body is the smal little world; the man shal be an integral part of the nature. No matter to recognize the uni-verse or the human body life, it is expressed with Yin Yang space-time. Yin Yang is on Dao. The space-time is on universal things;the Yin Yang Dao is the basic tool to recognize universal space-time; the universe and the human body life are the invisible and visible concordant things evoluted from Yin Yang space-time; paying attention to Yang Qi and time is the important part of TCM original creative thought, which is broadly used in TCM, and it can ful y grasp human body life rule, emphasizing entity and system, can dynamical y and actively grasp life law. Insisting on and emphasizing Yang Qi and space-time is helpful to TCM inheritance and development.