An easy-to-chip mechanical parts processing workbench is provided, comprising a support frame and a mounting cavity, the mounting cavity being opened in the surface of the support frame, the mounting cavity having two workbenches slidably inserted therein, one end of the two workbenches being provided with a bow-shaped rod, a cross plate being mounted below the support frame, and the top surface of the cross plate having a stepper motor installed thereon, the output end of the stepper motor being provided with a second gear through a transmission shaft, the top surface of the cross plate being mounted with a bearing seat The threaded sleeve is movably mounted with a screw, and one end of the screw is connected to the surface of the bow-shaped rod, and the outer surface of the threaded sleeve is connected to a first gear, and the first and second gears are meshed.