The branch pipes are the important part of the hydraulic ship lift water conveyance system.Aiming at the force characteristics of the branch pipe in the hydraulic ship lift of Jinghong hydropower station,we apply the numerical calculation method for sensitivity analysis of four-girder reinforced trifurcations and four crossed pipe.The results show that the structure of the branch pipe is reasonable and feasible to meet the requirements of the water conveyance system layout of the hydraulic ship lift.The research can provide a scientific basis for the design of the bifurcated pipes of the hydraulic ship lift.