Abstract: In order to comprehensively evaluate and analyze the qualitative problems in the influence factors of train reentrant ability of urban rail transit and determine the weight of the influencing factors in the process of reentrant, the paper used analytic hierarchy process (AHP) to establish the AHP model of influence factors on the reentrant ability of urban rail transit, provided a reference for the design of the prophase reentrant station and the optimal design of the later reentrant ability. The results show that the pre-design and post-optimization of the reentrant station from turnout type, stop time, and reentrant station can greatly improve the reentrant ability.