To investigate the impacts of anthropogenic aerosols on typhoon Fitow, the No. 23 typhoon in 2013, three simulations with zero, normal and increased anthropogenic emissions were conducted by using WRF-Chem V3.5 (Weather Research and Forecasting Model coupled to Chemistry Version 3.5). Comparison of the results shows that anthropogenic aerosols could hardly influence the track of Fitow. The increased anthropogenic aerosols led to weakened intensity, reduced total accumulated precipitation and decreased precipitation rate in typhoon main body during the phase when Fitow approached the land. Increased aerosols could provide more cloud condensation nuclei, which leads to increased cloud water at the periphery. Therefore, more cloud water could rise above the freezing level and produced more supercooled water, which provided an advantage for the forming of ice particles. These processes not only released extra amount of latent heat, but also enhanced the convection and precipitation at the periphery of typhoon. Furthermore, the invigorated convection at periphery caused an increase in warm and moist air lifted there and a decrease in inflow reaching the typhoon center, and hence resulted in a weakened eyewall and precipitation near the eyewall. The strength of typhoon was weakened. Precipitation at eyewall still dominated precipitation over the typhoon main body due to the weaker convection at its periphery. As a result, total accumulated precipitation and precipitation rate in the typhoon main body both decreased.