The invention discloses a cooling bed, and particularly discloses a cooling bed for channel rails. The cooling bed comprises a plurality of moving beams and statical beams as well as a plurality of pusher dogs and stop dogs, wherein the moving beams and the statical beams are parallel to each other, and the moving beams can move forwards, backwards, upwards or downwards under the effect of a driving device; the plurality of pusher dogs and stop dogs are arranged on each moving beam and each statical beam; each pusher dog comprises an upper part, a middle part and a lower part from top to bottom in sequence; the middle part of one pusher dog is connected to the corresponding moving beam or the corresponding statical beam through a rotating shaft, so that the pusher dog can rotate around the corresponding rotating shaft; when the upper part of one pusher dog rotates to the upper part of the corresponding moving beam or statical beam, the lower part of the pusher dog is limited by one corresponding stop dog. The cooling bed for the channel rails can be used for improving the steel discharging efficiency and is especially suitable for steel discharging of 60R2 channel rails.