The invention discloses a bearing loading device which comprises a housing, wherein circular holes are formed in the two sides of the top of the housing at equal intervals; a frame body is fixedly connected with the center of the top of the housing; a cover plate is movably connected with the right side of the top of the frame body through a hinge; corrugated plates are fixedly connected with thetwo sides of the frame body; a plastic film fixedly fits the side, far away from the frame body, of each of the corrugated plates; a foam plate is fixedly connected with the top of the cavity of the frame body; leaky pipes are fixedly connected with the center of the bottom of the foam plate at equal intervals; and an air cushion is fixedly connected with the side, close to the foam plate, of thecavity of the frame body. According to the bearing loading device, through the housing, the frame body, the corrugated plates, the air cushion, a hair cushion, a connecting housing, an inclined tube,a fixed housing, a drain pipe, a cylinder, a vertical rod, a pull rod, a short plate, water absorbent wool, a spring, a balancing weight, a bulged block, a support plate and a storage housing, the dampproof capacity of the bearing loading device is improved, moisture in the bearing loading device can be better drained and a bearing is prevented from being damaged in the case of water.