The invention discloses an auxiliary positioning wood cutting machine. The machine comprises a cutting table and an electric saw perpendicularly mounted on the cutting table and further comprises baffles, flexible steel plates and a plurality of screw rods; the two baffles are perpendicularly and fixedly arranged on the work plane of the cutting table and are symmetrically arranged in parallel; the electric saw is mounted at the front end of the symmetric axis of the two baffles, a plurality of through holes allowing the screw rods to perpendicular penetrate are formed in the side faces of the two baffles, and the screw rods can slide in the through holes; the segments, located on the inner sides of the baffles, of the screw rods are sleeved with springs, and the ends, located on the inner sides of the baffles, of the screw rods are fixedly connected with the flexible steel plates; under the natural state of the springs, one ends of the springs are fixedly connected with the flexible steel plates, and the other ends of the spring abut against the inner sides of the baffles.