Abstract: Sheng Yuan freight station is not only a key part of the coal distribution links, but also the road concentration and rail transport of the intermediate links. Civil structure is the carrier of the various transport links in the system. in addition is a prerequisite for the operation of various equipment. Because the project is located in the valley backfill area, backfill thickness is more than 20m, not suitable for building constructions. in order to ensure the progress of the project, we decide to use Cast-in-place pile which Penetrate the backfill area. In order to determine the calculation of the end bearing friction pile and the rock socketed pile which is more suitable for the actual conditions. Calculating and Analyzing the trestle legs bearing capacity difference between two calculation models. Through theoretical analysis combined with static pressure test data. It is concluded that the end bearing friction pile is more suitable for the actual working condition of the project.