Workbench convenient to adjust and fix for mechanical maintenance

The utility model discloses a mechanical maintenance work table convenient to adjust and fix, which comprises a work table and a pair of bottom plates, the pair of bottom plates are arranged on the two sides of the upper end of the work table, a moving mechanism is arranged in a transverse groove at the upper end of the work table, a lifting mechanism is arranged in an inner cavity of each bottom plate, and the lifting mechanisms are arranged on the bottom plates. A movable plate is connected to the interior of each bottom plate in a sliding mode through a lifting mechanism, two fixed plates are fixedly connected to the opposite sides of the two movable plates, and an adjusting mechanism is arranged between each pair of fixed plates. The adjusting mechanism can drive the distance between each pair of extrusion blocks and the fixing plate on the lower side to be changed, mechanical parts of different thicknesses can be conveniently fixed, manual fixing is not needed, overhauling is more convenient, the lifting