The investigation of MAVs (Micro Air Vehicles) of several configurations were carried out in Low Turbulence Wind Tunnel at NPU (Northwestern Polytechnical University).The aim is to explore the experimental technique of the MAVs and obtain low Reynolds number aerodynamic characteristics on the configurations. The influence of wind velocity and angle of attack on aerodynamic characteristics is reported. It is shown that the wind tunnel experiment is an effective and feasible way to study low Reynolds number aerodynamic characteristics and octagonal configuration has higher lift-to-drag ratio and higher lift coefficient than the others. It is an ideal configuration choice for the design of the MAVs. The results of The tests can be used to refer to the design of MAVs.