To provide a hopper for PET bottle crusher requiring no manual work capable of crushing a recyclable PET bottle with a cap (lid), a label, and a ring attached thereto and smoothly discharging a plurality of PET bottles one after another without causing clogging.

The hopper is equipped with sloped side wings (11, 11) tilted down from the upper surface toward the inside so that PET bottles V charged thereto are introduced inside and caused to fall down, a sloped backside wing 12 tilted down from the upper surface toward the inside, a space 14 that holds PET bottles charged therein, and a duct 13 constituting a part of the space 14 equipped with a bottom opening 13a. A conveyer 2 is disposed at the bottom opening 13a of the duct 13 for discharging a PET bottle V. One or two pairs of side guide-bars 15 are disposed on the inner wall of the duct 13 in the vicinity of its outlet for separating overlaid PET bottles V. The hopper 1 is equipped with a vibrator for vibrating its whole body.