The mesoscale meteorological model MM5 coupled method of air quality model CALPUFF is used to simulate the diffusion and transmission of SO2 and NO, emitted by the major industry sources of Guangzhou supervised by Provincial Environment Protection Section. And then the concentration distributing of SO, and NO, and the influence on special location, mainly for the Asian Games venues in 2010, are analyzed. The results show that the concentration of SO2 and NO, is obvious uneven temporal and spatial distribution mainly affected by the impact of a typical wind speed. Peak concentrations occurred mainly in the evening to early morning hours, while the lower peak concentrations occurred mainly during the day to noon. In the impact of emission distribution, emission height and wind direction, high concentration of pollutants appears in Liwan District, Yuexiu District, and the obvious form of pollution appears in the southwest of Guangzhou. Moreover, these sources have a greater impact on air quality near the stadium in the Nansha. The results have some reference value for the analysis of sources of air pollution in Guangzhou.%以广州省控工业污染源排放的气态污染物( SO2、NOx)为主要研究对象,通过中尺度气象模式MM5与空气质量模式CALPUFF耦合,模拟11月典型气象条件下,SO2和NOx的扩散传输过程,研究其时空分布特征,并分析省控工业污染源排放对特定区域(主要针对2010年亚运场馆)空气质量的影响.结果表明,主要受典型风速的影响,SO2和NOx浓度具有明显的时空分布不均匀性.浓度高峰值主要出现在晚间至凌晨时段,而浓度低峰值主要出现在白天至中午时段.受污染源分布、排放高度和风向的影响,荔湾区和越秀区污染物浓度较高,且在广州西南部形成较明显的污染带；且这些省控污染源对南沙体育馆空气质量有较大影响.研究结果对广州空气污染来源分析具有一定参考意义.
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