The utility model provides an improve protection level's two crossbeam combined type guard bar of road bed section can help ensureing road bed roadside guardrail protective capacities, is applicable to the expressway subgrade section, especially is applicable to the high protection level's of dirt road shoulder requirement includes upper steel construction and lower part concrete structure, its characterized in that of, lower part concrete structure includes concrete foundation and concrete foundation, concrete foundation's top surface is connected upper steel construction, concrete foundation's bottom surface is connected concrete foundation, concrete foundation adopts seat formula concrete foundation or stake formula concrete foundation, the two crossbeam structures of upper steel construction for supporting through the stand, entablature in two crossbeam structures is located the top of stand, bottom end rail in two crossbeam structures is located the middle part of stand.