The invention provides a woodworking lathe capable of automatically adjusting the position of a turning tool tray. The lathe comprises a lathe body and a tray piece, wherein evenly-distributed fixing bases are fixedly installed on the outer side of the tray piece, detection assemblies are movably installed in the fixing bases, elastic pieces are installed on the detection assemblies, and correction assemblies are installed at the tops of the fixing bases; and each correction assembly comprises a support, a collision plate and a metal box, wherein a driven magnetic block is fixedly connected to the collision plate, a driving magnetic block is fixedly installed in the metal box, and a metal cover plate is movably installed between the metal box and the driven magnetic block. When the tray piece deflects, a detection ejection plate is pressed to move inwards, then a sliding block is driven to move, a push plate pushes an inner cover plate to move upwards, the metal box is opened, the elastic pieces bounce upwards into clamping groove, an outer cover plate is pushed to move upwards, a magnetic field of the driving magnetic block is not isolated any more, the driving magnetic block and the driven magnetic block generate the repulsive force of the same magnetism, and the collision plates are pushed to move quickly and collide with the tray piece, so that the tray piece is reset through collision, and the function of automatically adjusting the turning tool tray is achieved.