Abstract: This article discusses the integrated construction method of prefabricated box girder side beam and anti-collision wall of a municipal bridge with a span of 35 m across the Beijing-Kowloon Railway Interchange on Fuyang Runhe Road, and analyzes the prefabricated box girder side beam and anti-collision wall There are problems in the integrated construction method of beam body eccentricity, gantry crane and bridge girder crane, beam body transportation, beam body erection, etc., and through analysis, measures to solve the problems are formulated, and the measures are verified through examples Effectiveness. It provides valuable experience for the implementation of the integrated construction method of the side beam and anti-collision wall of the upper-span railway bridge.