From the viewpoint of the symbiosis and sustainable development between Man and Nature,in the big system of Nature-Sci & Tech-Economy-Society-Human,this thesis focuses on the study of appropriate technology innovation(ATI),that is the study of symbiotic technology innovation to support to support recycle economy & harmonious society.It is in essence different from the former traditional technical innovation and earlier applicable innovation. On a certain meaning,applying the technical symbiosis innovation really indicates and bodies the essence relation between the technical innovation and the sustainable development of the society.It represents the basic direction and basic processes of technical innovation and becomes the correct technique choice and important technique foundations of that we set up the recycle economy and harmonious society.