In order to increase the ability of blind people to travel independently and take the subway, relevant research is made on the guidance signs for blind people in Beijing subway. Using the method of user field test, the route complexity and the availability of signs that affect the performance of route finding are selected as independent variables, and the time spent in route finding and the number of confused errors are selected as dependent variables. The experimental route is selected through AHP and quantitative analysis, and the participants are recruited to test the efficiency of blind travel route finding. The results show that the route complexity and the availability of signs have a significant impact on the number of confused errors and the time of finding the way. The number of route turns is one of the important factors affecting the sense of safety of blind people in road finding. The front and back of the security inspection office are the places where blind users have the most safety problems. It can be seen that reducing the number of route turns, that is, reducing the complexity of the route and improving the availability of blind guidance signs in front of and behind the security inspection office can improve the routing performance of blind users. According to the experimental results, the data range for the general blind to achieve high pathfinding efficiency is obtained. In the future, improvements and new designs can be made mainly for these aspects, so that the blind can pass smoothly in pathfinding, enhance their sense of security in pathfinding, and increase the guarantee for the blind to travel independently.