The aerodynamic characteristics of motorcycle influent the power performance, fuel economy and operation stability of motorcycles directly. Considering the absence of special wind tunnel for motorcycles in the domestic and road coasting test doing not apply to all types of motorcycle, aerodynamic simulation method was applied in the development process of a new touring styling by analyzing the aerodynamic characteristics of real vehicle model. Basing on that, the optimization design was made and then simulations were made respectively with two windscreen installation angles provided. The simulation results show that drag coefficient C_d is reduced by the optimization scheme and the aerodynamic characteristics comparison between the two installation schemes provide the reference for further style selection.