The invention discloses a machining method for scraped slots on the surface of antique a wooden board. The machining method mainly comprises the steps of: firstly designing a scraped slot trend curve by utilizing computer aided design and manufacturing technology, then selecting simulated tools with different shapes and sizes, setting machining technique parameters, conducting simulation machining and regulating to achieve the effect required by a design scheme, generating machining procedures, and inputting into a digital antique finishing machine tool; according to the simulation result, automatically clamping a wooden board to be machined, adopting a specially designed milling tool, selecting machining procedures to conduct automatic machining, finally completing the scraped slot machining on the surface of the wooden board, and automatically discharging the machined wooden board. Compared with the manual machining method and the conventional mechanical processing method, the machining method disclosed by the invention has better antique effect, higher processing efficiency, lower labor intensity and lower production cost by computer-simulated machining in advance, and can be widely applied in surface machining and production of the antique wooden boards.