PURPOSE: To prevent buckling of a processing part of a pipe end to be inserted into a mold, by a method wherein at the time of processing of synthetic resin pipe by the mold for the processing of the pipe end, a cooling time of the processing part of the pipe end is reduced, a processing rate is made fast and a mold is cooled sufficiently.

CONSTITUTION: In a mold 10 for processing of a pipe end of a synthetic resin pipe, which is inserted into an inside diametral part of the pipe end of the synthetic resin pipe and enables processing of the pipe end, the title mold is obtained, by providing a cooling fluid passage 30 in a part which is inserted into the inside diametral part of the pipe end of the mold 10.