Guide rail adjusting mechanism and processing machine tool thereof

The utility model discloses a guide rail adjusting mechanism and a machine tool thereof, the guide rail adjusting mechanism comprises a working table, the top end of the working table is provided with two rail seats, a moving mechanism is arranged between the rail seats, the moving mechanism comprises a turntable, a connecting rod, a worm gear, a worm and a rotating assembly, and the turntable is rotatably connected with the working table through a rotating shaft in a penetrating manner; one ends of the two connecting rods are rotationally connected with the rotating disc, the other ends of the two connecting rods are rotationally connected with the two rail seats respectively, the worm gear is fixedly connected with the rotating shaft in a penetrating mode, the worm is rotationally connected with the workbench in a penetrating mode, the worm gear is connected with the worm in a meshed mode, and the rotating assembly is connected to one end of the worm. By means of the arrangement mode that the rotating disc,