The invention discloses a discharging device of solid wood door core board polishing equipment. The discharging device comprises a rack. A door core board conveying mechanism is arranged above the rack. A door core board rotating mechanism is arranged below the rack. A stacking mechanism corresponding to the door core board rotating mechanism is further arranged on the rack. The door core board conveying mechanism comprises a discharging lead screw fixed above the rack. The discharging lead screw is connected with a discharging drive motor. A discharging sliding block is arranged on the discharging lead screw and provided with a discharging hydraulic telescopic rod. A discharging guide rail of an I-shaped structure is arranged on the discharging hydraulic telescopic rod. A fixed suction cup and a sliding suction cup are arranged on the discharging guide rail. A discharging electromagnet is arranged on the fixed suction cup. A corresponding iron sheet is arranged on the sliding suction cup. The discharging device has the beneficial effects of reducing production cost and improving polishing efficiency.