Abstract: Pollutant emissions from coal-fired power generation aggravate the deterioration of air quality in areas near coal-fired power, and it is urgent to control the concentration of coal-borne pollutants during power generation. In this paper, the characteristics of the coal-borne pollutants diffusion capacity with different meteorological conditions were analyzed in depth. Based on the spatial distribution of source and load and the time-varying wind speed and wind direction conditions, Gaussian plume model was used to describe the spatiotemporal distribution of the concentration of coal-borne pollutants; The coal-fired power generations coordinated power generation and coal blending optimization model that takes into account the characteristics of atmospheric pollutants diffusion, co-models coal power generation scheduling and coal blending optimization issues, and obtains effective improvement in environmental benefits at a lower operating cost. The results of an IEEE 14-node system verified the effectiveness of the proposed model and method.