To cut, by a metal saw cutter, a pipe of a relatively thin thickness conventionally cut by a pipe cutter.

This pipe cutting tool is equipped with: a substantially plate-like base part 4; a pair of parallel support rollers 5 and 8 arranged on the base part 4; and a roller interval adjusting means for adjusting an interval between both support rollers 5 and 8 in response to an outer diameter of the pipe P to be cut. The pipe cutting tool 3 is fixed to a vice 4 of the metal saw cutter so that the pipe P being a cutting object is rotatably supported between both support rollers 5 and 8, and a metal saw is replaced with a cutter wheel 9.