The invention relates to a corrugated pipe cut-off machine, which comprises a base. A boss is arranged at one end of the base, a cut-off cylinder and a first guide pipe are disposed on the boss, a second clamping cylinder is arranged on one side of the first guide pipe, a cutter is connected onto the cut-off cylinder and matches with a groove on the first guide pipe, a second guide pipe and an adjustable cylinder are arranged at the other end of the base, a linear guide track is disposed between the adjustable cylinder and the cut-off cylinder, and a first clamping cylinder is arranged on the linear guide track. The corrugated pipe cut-off machine has the advantages that electric elements including the four cylinders, a double-time setting relay, a counter, an electromagnetic valve and the like are integrated, and functions of an automatic corrugated pipe feeding device are realized by means of linkage of the cut-off cylinder, the adjustable cylinder and the two clamping cylinders. In addition, strokes of the cylinders are short, the running speed is fast, labor intensity of staffs is greatly reduced, semi-automatic pipe cutting operation is realized, cost investment is low, production efficiency is high, consumed working hours per capita can be reduced, and potential safety hazards caused by operational fatigue are eliminated.