To compare the difference of air influences in Fuling county between adopting Central heating at Longqiao power station and dispersing the heating all around the county,the authors simulate the distributing of the city air pollution(SO_(2),PM_(10)) with the computational fluid dynamics software-PHOENICS.The simulation results show that the pollution source are much wider.Because the main reason infecting the diffused of pollution is the city dominant wind,the decrease of the pollution along the side of city dominant wind is tremendous,the percentage of the pollution recedes from 5% to 1%,and the polluted area of the central heating is 20% of the area of separate heating,especially the pollution of the area with high population is decreasing remarkably such as the residential area.The simulation has proven the advantage of the central heating on the point of the air pollution.In the meanwhile,computer simulation is an accurate and convenient means to help analyze air pollution of urban.