To easily crush PET bottles and to further promote recycling of the PET bottle.

A PET bottle crusher 1 is provided with an opening-closing door 5 arranged to the upper face of a main body housing 3, a limit switch 7 to detect whether the opening-closing door is at an open state or a closed state, a pressing plate 9 to crush a PET bottle PET, an electric motor 11 to advance/retreat the pressing plate 9 between an initial position and an advanced position, a limit switch to detect the return of the pressing plate to the initial position, a control circuit 15 to input the detection signal of the limit switch to control the electric motor 11, a right side wall 19 vertically fixed to a bottom plate 17, a PET bottle dropping hole 21 opened on the bottom plate 17 at a position very close to the side wall 19 and a lamp 23 mounted on the upper part of the main body housing 3.