Abstract: The paper analyzed the China’s high-speed rail network space efficiency and study on the relationship between the supply and demand in perspective of accessibility. Firstly we utilized the daily accessibility (DA) and person-weighted accessibility (PWA) indictor to measure the accessibility increment from the high speed rail (HSR). Then combined with mileage data of the main HSR network, we described the spatial pattern and evolvement characteristics of China’s high-speed rail line efficiency. Secondly we explored the spatial difference of the supply level of high-speed rail network through PWA index. Thirdly the relationship between the supply and demand for HSR accessibility by using the factor overlay and regression methodology was described. The result showed that in PWA increment and its efficiency, the main HSR line’s was high, the feeder’s was low, the lines in central area was high and the lines’ in periphery and at the end of the HSR network was low. The overall PWA increment and efficiency diminishes from east to west. HSR network PWA space efficiency presents the tree structure, core-periphery structure and regional gradient differences. PWA increment and its efficiency decreases year by year. (2) High demand lines mainly existed in central area, low demand lines in the Midwest. (3) HSR network supply-demand matching degree was high. Double-high type lines were the backbone, Double-low type lines included lines in the west of China regional and network peripheral circuit. (4) City PWA increment was key driving factor of HSR passenger Numbers, which can be used to predict the passenger scale of the city along the planning HSR line.