In order to study the influence of different bending forms of hydraulic pipeline on the system performance, different bending angles of the pipeline axis and different fillet radius at bending places were studied. The finite volume method and CFD technology were used to analyze the pipeline flow field of pipeline bending with different forms, the impact conditions of bend pipeline with different pipeline forms were obtained; SimulationX software was used to build the system simulation model; by changing the bending parameters, the influence of different bending forms on the performance of the hydraulic system was obtained, and the better bending forms were determined. The simulation results of pipeline flow field and pipeline simulation results of the hydraulic system were comprehensively analyzed, and then the optimal pipeline layout suggestions were obtained.It provides reference for the pipeline layout of hydraulic system.