Abstract:The influence of ownership structure on corporate investment in R D has been a major problem in theory field. The traditional research ignores the effect of holding structure between different corporate on R D investment. In this paper, a comprehensive analysis of the effect of corporate pyramids structure on R D combined with difference of property rights is done. The empirical results show that, in the case of other conditions unchanged, state-controlled firms in China pay less R D investment than others; firms with longer control chain and more members pay less R D investment, but the increase of control rights will reduce the negative effect ; the separation of cash flow rights and control rights has a negative effect on R D investment; When the ultimate controller is the country, scale effect and the separation effect was not significant; when the ultimate controller are other body, scale effect and the separation effect is very significant.