If one enterprise just takes technological innovation as the way for economic profit but not the combinational profit of economy,society and ecology,it will never survive in this fierce competition market.Based on the relationship between technological innovation and sustainable development,this paper brings forward that technological innovation must take the sustainablel development of society as the fundamental goal.Technological innovation should be the real impulse for the development of society,economy and ecology.On the basis of the analysis on previous technologicalinnovation impetus mechanism,combined with the influential factors,this paper puts forward SD-oriented mechanism oftechnological innovation.