The utility model discloses a corrugated pipecutting machine which comprises an operation table, a cutting device and a fixing device, wherein the cutting device and the fixing device are arranged on the operation table. The cutting device is composed of a hydraulic cylinder, a cutting tool, a supporting seat and protecting hoods. The supporting seat is fixed at the end of the operation table, a concave cutting port is formed in the supporting seat, a lower cutting tool blade is fixed in the middle of the cutting port, after the hydraulic cylinder is fixedly connected with an upper cutting tool, the hydraulic cylinder and the upper cutting tool are arranged on the upper portion of the supporting seat. The protecting hoods are arranged outside the hydraulic cylinder and outside the upper cutting tool, a plurality of electric switches of the hydraulic cylinder are arranged on the operation table, and the fixing device is aligned to the horizontal position of the cutting port of the cutting device and is fixed at the inlet position of the cutting device of the operation table. The fixing device of the corrugated pipe pipe-cutting machine can straighten a corrugated pipe, enables measuring to be more accurate, the cutting device can carry out cutting on the corrugated pipe rapidly, the electric switches arranged on the operation table can ensure that operation staff can carry out cutting operation at different positions, and the whole corrugated pipe pipe-cutting machine is simple and reasonable in design, and is strong in practicality.