Abstract: By traditional differential equation oriented sunulation, the sunulation modeling and proceess can he hardly revealed, the program only can be applied to the special water conveyanc, system.In this paper we conduct a study of the new way to carry out simulation modeling for water conveyance system.With the help of the Simulink software, we apply the structural drawing oriented simulation to water conveyance system.Using the structural drawings to construct the simulation model, we can make the simulation visual easily.On the other hand, the simulating can be controlled betimes according to the feedback information of visualization.We at last improve the feasibility of the new simulating method by an engineering instance.