Full automatic bottle unscrewing machine, suitable for unpacking plastic bottles of different specifications and shapes, suitable for plastic bottles of various specifications, electronic speed control of the main motor, no bottle jerking and reversing, no jamming, automatic shut-off when bottles are clogged, automatic filling and reversing of bottles when missing bottles, automatic detection and rejection of reversed bottles, alarm function when lack of material in silo, equipped with three-color warning light, equipped with plexiglass protective cover