The invention discloses an efficient multi-sawtooth thicknessing machine for trees. The efficient multi-sawtooth thicknessing machine comprises a machining mechanism and a feeding mechanism, the machining mechanism is composed of a workbench, a control panel, a mounting groove, a first servo motor, a driving chain wheel, a driven chain wheel, cutting rollers, a supporting frame, a pressing air cylinder, a fixing frame, a driven pressing roller, a driving pressing roller, a first driven belt wheel, a second servo motor and a driving belt wheel, and a material conveying groove is formed in the top of the workbench. According to the efficient multi-sawtooth thicknessing machine for the trees, the structure is simple and flexible; through the arrangement of a feeding motor and a conveying motor, during work, automatically feeding on materials can be conveniently carried out through a clamping plate and a lifting electric telescopic rod, manual feeding is avoided, the labor intensity of workers is reduced, the feeding speed is increased; and through the arrangement of the pressing rollers and the plurality of cutting rollers, under the condition that the plurality of cutting rollers work at the same time, the cutting speed is greatly increased, the machining time is shortened, and the machining efficiency is greatly improved.