The invention relates to a semi-automatic table board adhering device, which comprises a board discharging device, a positioning device, a board dropping device and a pressing device. The semi-automatic table board adhering device is characterized in that the board discharging device is provided with a spring press sheet for sequentially and continuously discharging boards; when a base board is arranged on a flow line, the whole stack of table boards is pressed on a friction wheel, and is pressed by the spring press sheet; the width of a limiting groove of the base board is adjusted according to the size of the base board, a table board discharging friction wheel rotates to send out one table board and then stop, and the base board is driven by a conveying friction wheel to enter a guide groove of the base board; after the base board enters the guide groove, a positioning friction wheel is controlled and rotated by a single chip microprocessor, one end of the base board is tightly abutted against a retaining plate, and the base board is conveyed to the proper position; guide retaining boards at both sides can be adjusted according to the size of the base board; when each table board enters the preset position, a motor rotates, a movable board is opened by the movement transfer of a gear and a connecting rod, and each table board drops down, and is adhered with the base board; after each table board drops onto the base board, the table boards are mutually and firmly adhered under the pressing function of a pressing roller.