Abstract：
This paper estimates the technical efficiency levels in different regions by SFA and explores their influencing factors. It is found that the amount of input is the main determinant of our urban production. Technical efficiency of China’s cities is not improved annually. The degree of technical efficiency in the western region is higher than that in the Midwest region,and the urban disparity of technical efficiency between the small resource-based cities and the large and medium-sized cities. FDI shows a better performance in the improvement of urban technical efficiency,than domestic investment.
2013 
