In the single acting vane pump, the movement of vanestator pair is complicated. Under the influence of periodic load, the vane blade is easy to break or the surface of the stator is scratched for the insufficient strength. That is the key factor to restrict the performance of this vane pump. According to those above characteristics, the bearing mechanism in the whole rotation period was analyzed. Also the contact strength and strain distribution of the vane and stator were calculated by using ANSYS software. The results show that the equivalent stress of the stator ring and vane all have a certain degree of volatility; the maximum equivalent stress of the stator occurs at the end surfaces, the maximum stress of the vane concentrates in the top or the contact position, but the vane stress is obviously lower than that of the stator. So increasing the top arc of the vane can reduce the stress concentration. The research work provides a certain theoretical foundation for the analysis and design of vane pump.