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In order to understand the PM25 concentration forecasting performance over Anhui Province, the forecasting results of the Operational Forecasting System for Atmospheric Environment over East China based on the WRFChem Model is evaluated in combination with the observation data from June 2015 to May 2016 The results show that: (1) The correlation between the modelforecasted values and the observed is good, and the prediction performance of different lead times can reach “excellent.” (2) The spatial distribution of the mean forecast bias is negative in North Anhui and positive in South Anhui. (3) The mean biases of the 24hour forecasts in the summer and autumn of 2015 were negative in the northeast Anhui and positive in other regions. In the winter of 2015 and spring of 2016, the mean biases for the northeastern Anhui province and south of the Yangtze River were negative. The mean bias of the 14 cities in different seasons was within ±30 μg〖DK〗·m-3. (4) The missing rate was bigger than the false alarm ratio in moderate and above pollution days for most cities in Anhui Province.