The present invention relates to a blowing-suction device, selectively operating in a blowing mode or a suction mode, including: a main body; a motor located inside the main body, having a motor shaft providing rotational motion; a fan assembly driven by the motor to rotate; and a blowing assembly and a suction assembly connected to the main body; wherein the fan assembly includes an axial fan, in the blowing mode, the blowing assembly is connected to the main body, and the axial fan rotates around a first rotary shaft, and in the suction mode, the suction assembly is connected to the main body.