Abstract: For mass concrete, water pipe cooling is a main temperature control measure.Alternately changing the direction of cooling water has the best cooling effect, but it often requires more manpower and material resources.So in actual construction, it is still possible to use a single direction of water-flow cooling.In view of this situation, combined with the Qianwei Pump-Gate Project in Shanghai City, the heat-flow coupling algorithm was used to simulate the cooling effect of cooling water on the bottom plate concrete of the pump house under different water pipe layouts and floor pouring methods.The simulation results showed that the ‘double circulation' water pipe layout could reduce the large temperature gradient of the bottom plate, while the traditional ‘single circulation' water pipe layout couldn't solve this problem.By block pouring, the temperature gradient of the structure was small, and the tensile stress of the new and old concrete joint surface was too large.Under the condition of single water-flow direction, it was suggested to adopt the ‘double circulation' water pipe layout and reasonable block pouring plan.The research results can provide reference for the temperature control of bottom plate of pump stations.