Machine tool bed

The invention provides a machine tool bed which comprises a bed body. The bed comprises a head and a tail, the upper portion of the head is provided with a top plate with a plurality of mounting holes and a plurality of installing square grooves, a second end plate is arranged on the side of the top plate downwards in the height direction of the machine tool bed, the lower portion of the head is provided with a plurality of evenly distributed long bed plates, the lower portion of the tail is provided with a plurality of evenly distributed bed plates, and a plate with a third rib plate and a plurality of second rib plates is arranged above the long bed plates and the bed plates. Two third hot rolling groove pipes symmetrical with each other are arranged on the two sides of the plate, every two second rib plates form an acute angle structure to be sequentially connected linearly, a first rib plate is arranged at the position of the center line in the acute angle structure, and the first rib plate and the long bed plates are parallelly arranged in the length direction. A second hot rolling groove pipe, a first hot rolling groove pipe and the second end plate form a square-in-square structure. The machine tool bed is simple and reasonable in structure and high in movement strength, and mechanical properties of a machine tool are improved.