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. As the juice extractor adopting the proposal employs a double-spiral screw structure, the juice yield of the juice extractor reaches up to 85 percent not only the nutrient contents of fruit is fully retained but also the work efficiency of the juice extractor is higher than that of other fruit extractors and the variety of fruit which can be extracted is higher. Moreover, due to the adoption of the screw with the structure, the noise can be further reduced the service life of the screw can be prolonged and energy conservation and environmental protection can be achieved.
