A vacuum pump, and a waterproof structure and a control apparatus applied to the vacuum pump which improve efficiency of on-site maintenance work and prevent water from penetrating into a connector connecting portion when a cover is removed during circuit separation or the like. When performing maintenance work, after a chassis of a control apparatus is lowered by around several tens of millimeters, the chassis of the control apparatus is pulled out in a radial direction of a pump. Accordingly, a pump main body and the control apparatus can be readily attached and detached even when sufficient empty space is not available in an axial direction of the vacuum pump. A wall portion is circumferentially protrusively provided in side portions of the base portion and the control apparatus. Furthermore, a sealing member and a lid are inserted into a gap. Therefore, water droplets cannot easily penetrate into the gap.