The invention relates to a beveling machine, and discloses a double-face beveling machine. The double-face beveling machine comprises a base, clamping devices, a tool head, a tool rest and tools, wherein the clamping devices, the tool head, the tool rest and the tools are arranged on the base. The clamping devices are two clamping units which are used for clamping the front beveled end of a workpiece and the reverse beveled end of the workpiece respectively, and the double faces of the workpiece are clamped at the same time. The tools comprise the cut-off tool, the front beveling tool and the reverse beveling tool, and the cut-off tool, the front beveling tool and the reverse beveling tool are all fixedly arranged on the tool rest. According to the double-face beveling machine, the two clamping units are adopted, and therefore clamping deformation of the workpiece is effectively avoided; the cut-off tool, the front beveling tool and the reverse beveling tool are used for conducting rotary cut-off, front beveling and reverse beveling on the workpiece, end faces are perpendicular, and chute faces on beveled edges are free of burrs and are not deformed; a water pump cooling system is good in cooling effect; the radial clearance amount of the beveling machine is extremely small, and the beveling machine is attached to pipe walls for machining, and is high in reliability and automation degree, easy to operate, suitable for online pipelines and repair work, simple and compact in structure, small in occupied space and light in weight.