Abstract: Driven by rapid economic, healthy and high-quality development, urbanization is getting closer and closer to the ideal goal, and the scale of development has increased significantly. Under such a background, the flow of urban people has continued to increase. This is a weakening of the subway. The system is a major test. As far as the current situation is concerned, the installation of the subway’s weak current system is of extraordinary significance and its effect is significant. It is a key point in the construction of the project. In actual work, only by continuously optimizing the installation plan of the weak current system can the effect of urban subway projects be improved to a high standard. Based on this, this article will give a comprehensive introduction to the installation procedures of the weak current system in order to provide a reference for the rational optimization of future installation projects.