PURPOSE: To enable a covering film to be exactly cut in the shape of a ring along a channel, on cutting off the covering film of a pipe to be covered with, by using a pipe-covering film cutter.

CONSTITUTION: In the state of bearing a pipe 1 to be covered, in the retaining space of retaining section 5 for bearing the pipe 1 to be retained, the retaining sections 5 are provided with projections 8 to be advanced into the channel 3 of the pipe 1 to be covered with.