The blades flow around and rotating have a direct impact on flow filed around tower of upwind wind turbine, the 3 MW wind turbine developed by Nanjing University of Aeronautics and Astronautics is studied, different blades positions on flow around and wake characteristics of wind turbine tower under stopped status is simulated by large eddy simulation, in order to verify the effectiveness of the LES method, the results are compared with fluctuating wind pressure curve at home and abroad, the influences of blade surface pressure coefficient, integral lift and drag coefficient and flow around and wake characteristics by different blades positions are analyzed. Studies show that blades positions had a great effect on tower flow around and the distribution of the aerodynamic force, condition five is the most unfavorable condition and condition one is the benefit one. The main conclusions can be provided for wind load of large wind turbine design under stopped status.