Hot rolled H-beam is mainly used in temporary structures and secondary load-bearing components in highway bridges. With the continuous improvement of the production capacity of hot-rolled H-beam in China, this paper studies the applicability of hot-rolled H-beam in Highway Bridges Based on the preliminary design of Hangzhou Shaoxing section of Hangzhou Shaoxing Expressway (g92n Hangzhou Bay area loop parallel line). First of all, the specifications and supply of hot-rolled H-beam produced and planned at home and abroad are investigated. Then, the specifications are divided into 700mm, 900mm, 1100mm and 1172mm. The ultimate span of four specifications of hot-rolled H-beam is 16m, 20m, 25m and 35m respectively through the modeling calculation and analysis of ANSYS solid + plate element, and the economic analysis is carried out. It is found that the section characteristics of hot-rolled H-beam are fixed, which leads to a large amount of steel used for hot-rolled H-beam composite beams. The suggestion of developing hot-rolled H-beam section with adjustable thickness of upper and lower flange plates and webs is put forward, which can be used as a technical path for the popularization and application of hot-rolled H-beam composite beams in highway bridges.