By using a panel data from 25 provinces and regions over a period of 2008 to 2011 in China~ high technology industry (which only conclude large and medium -sized enterprises) for the empirical analysis, this paper explores how invest- ments in science and technology, property right structure, enterprise scale and government tax influence technology inno- vation. The results show that state - owned property rights has a certain retroaction on sales revenue of new products, firm size has a significant effect on innovation, government financial ...