PROBLEM TO BE SOLVED: To provide a pruning machine designed so as to prevent nuts from dropping down to be improved in assembly property and prevent such a trouble as loss of the nuts. SOLUTION: The pruning machine is structured as follows: nuts 13 are fixed to a housing 2 to disassemble or assemble the pruning machine via screws screwed with the nuts 13; nut holders 19 each provided with holding parts 19a holding the nuts 13 are set up; the nut holders 19 are inserted into the housing 2 while holding the nuts 13 on the holding parts 19a of the nut holders 19; a plurality of the holding parts 19a are formed at the nut holders 19; and the nut holders 19 are each made of elastically deformable material. COPYRIGHT: (C)2010,JPO&INPIT