The utility model provides a circular wood cutting machine with a plurality of saw blades, which saves the raw material and hardly burns the saw blades. The circular wood cutting machine comprises a charging device, a cutting device and a discharging device which are sequentially arranged, wherein the cutting device comprises a driver and a frame saw blade, the driver is connected with the frame saw blade, the frame saw blade is arranged between the charging device and the discharging device, the plane on which the frame saw blade is positioned is vertical to the charging device, the saw blade tooth surface of the frame saw blade faces to the charging device, and the frame saw blade is in a frame type structure which is formed by a mode that a plurality of saw blades are sequentially arranged and fastening brackets are fixed at two ends of the saw blades. The circular wood cutting machine has the following advantages of 1. saving materials, i.e. compared with the existing circular saw blades, the circular wood cutting machine comprises thinner saw blades, and generates small saw dust, thus saving more raw materials; and 2. reducing the resistance relatively, and hardly having the situation of burning the saw blades compared with the existing product.