To provide a plastic waste fractionating and washing apparatus capable of fractionating plastic waste into a plastic and forein matter at the time of recycling of plastic waste of every kind and capable of continuously washing the fractionated plastic.

This plastic waste fractionating and washing apparatus 100 has a water tank 20 having a hopper 30 being a plastic waste charging port at one end thereof and a takeout port for taking out the plastic waste at the other end thereof, the feed screw 70 almost horizontally arranged toward the takeout port from the charging port of the water tank 20, the discharge screw 41 arranged so as to rise upward from the takeout port of the feed screw 70 and a discharge chute 50 being the treated plastic waste discharge port arranged to the terminal end of the feed route of the discharge screw 41.