The invention provides a three-station automatic feeding method of a heating furnace and a three-station automatic feed conveying table thereof. The three-station automatic feed conveying table comprises a loading part, a transition part and a discharge part; workpieces are started from the loading part through a workpiece tray, are conveyed into the heating furnace after operating to the transition part, are machined to retreat to the transition part, and are conveyed to the discharge part by the transition part for unloading; and the workpiece tray is returned to the loading part to wait fornext circulating work after the unloading is finished. The three-station automatic feed conveying table has the advantages of simple structure, skillful design, convenience to operate, reduction of the cost, improvement of the efficiency and the like.