The invention relates to a clamp, in particular to a drill lathe clamp. The drill lathe clamp comprises a feeding screw rod, set bolts, fixing plates, knob rods, a clamp platform and clamping plates. The drill lathe clamp is characterized in that the fixing plates are pressed on the clamp platform by the set bolts; the feeding screw rod is connected together with the fixing plates through the matching of the set bolts; the end part of the feeding screw rod is connected together with the clamping plates through spherical hinges; and the knob rods pass from a through hole in the end part of the feeding screw rod. The clamp can not only clamp flaky workpieces which can be clamped by common clamps, but also clamp irregular lump objects.