The invention discloses a bearing buffer mechanism for a plow discharger. The bearing buffer mechanism comprises a support bottom plate, a rack, an electric-hydraulic push rod and a support buffer mechanism, wherein the rack is arranged on one side of the upper surface of the bottom plate, the electric-hydraulic push rod is installed on the rack, a plowshare is connected to one end of the electric-hydraulic push rod, both sides of one end of the plowshare are hinged with two vertical plates arranged on the support bottom plate respectively by virtue of hinged seats, a cushion is bonded to thebottom of the plowshare, a rotating roller frame is arranged on one side, which is opposite to the rack, of the upper surface of the support bottom plate, a rotating roller is installed on the rotating roller frame, a conveying belt is arranged on the rotating roller, a support plate is arranged just below the conveying belt, the support buffer mechanism is arranged at the bottom of the support plate, and the support buffer mechanism comprises an upper fixed block, a lower fixed block, a support rod and a buffer spring. The bearing buffer mechanism has buffer and support effects on a conveyingmechanism, material leakage is difficult during discharge, and the wear of the mechanism is less.