The invention discloses a board feeding device which comprises a bearing plate. A moving mechanism is arranged on the lower surface of the bearing plate. A vertical mounting plate is arranged on one side of the upper surface of the bearing plate. A rectangular slideway is machined in the surface of one side of the vertical mounting plate. Linear motors are arranged on the opposite surfaces of a fixing frame, and the telescopic ends of the linear motors are in the horizontal direction. The telescopic end of each linear motor is provided with an L-shaped carrying plate. A vertical rod is arranged on one side of the upper surface of the bearing plate. A controller is arranged at the upper end of the vertical rod. A capacitance display screen is arranged on the controller. A storage battery and a PLC programming system are arranged in the controller. The storage battery is electrically connected with the controller. The controller is electrically connected with the moving mechanism, an electric trolley, a first telescopic air cylinder, the linear motors, the capacitance display screen and the PLC programming system. The board feeding device has the beneficial effects of being simple in structure and high in practicability.