The utility model discloses a wood floor surface grain processing device, which comprises a working platform (3), wherein the lower portion of the working platform (3) is provided with a group of disc saw blades (4) whose heights can be adjusted, and a baffle plate (6) whose angle can be adjusted is arranged on a working platform (1). The wood floor surface grain processing device adopts a normal disk saw to process grains on the surface of a wood floor, and can process different grains with nostalgic style on the surface of the wood floor through changing the saw tooth shape of a saw blade, the number of disk saw blades, the distance between the disc saw blades, the relative moving angle of the disc saw blades and the wood floor, the relative moving speed of the disc saw blades and the wood floor and the heights of the disc saw blades. The wood floor surface grain processing device is simple and practical, does not need special-purpose equipment, can finish processing grains on the surface of the wood floor only through simply improving a normal disc saw machine, has simple structure, little investment and convenient daily maintenance, and does not need to invest maintenance cost.