Abstract: The invention discloses a juice extractor, which comprises a machine body, a fruit juice cup, a top cover and a push rod, wherein the machine body is arranged on a pedestal; a power unit is arranged inside the machine body; a filter screen and a spiral cutter are sleeved inside the fruit juice cup which is provided with a residue outlet and a juice outlet; the top cover for the fruit juice cup is provided with an inlet formed on one side of the top cover for the fruit juice cup and a rotary shaft hole formed on the center of an inner part of the top cover for the fruit juice cup; the spiral cutter consists of a screw and screw spirals; the screw is provided with an upper rotary shaft and a lower rotary shaft; the screw spirals are formed on the outer surface of the screw; and the spiral end face of the upper rotary shaft is a double-spiral notch formed by two symmetrically arranged tangent planes.