Currently, the researches on technological spillover effects in China mainly overlooked the spatial effects to them from transportation infrastructure, so this paper introduces transportation infrastructure stock into Romer's model, then it tests and confirms the assumption of the spatial dependence of the technology spillover effects by using Moran index. Furthermore, based on the extended Romer's model, it uses OLS and two types spatial econometric models of SLM and SEM to analyze the empirical data in 30 provinces in China in 2006. So, it finds that transportation infrastructure stock, R&D capital stock, learning by doing and reform are the determinants for technological spillover effects in these provinces in China.