The flow field of exhaust passage has an obvious influence on the heat transfer performance of condenser and the safety and economy of steam turbine unit. Considering the influence among steam turbine last stage, exhaust hood, and condenser throat, exhaust passage coupling with last stage in a 1000 MW steam turbine were simulated by using computational fluid dynamics(CFD) software. And in order to clearly understand the flow field of exhaust passage, the above results were compared with the results of the p...