The present invention relates to a juice extractor. The juice extractor includes: a main body including a drive shaft configured to be rotated; a housing mounted on the main body and opened at a top thereof, the housing including a juice outlet port and a draff outlet port which are formed at a lower end portion thereof in such a manner as to be spaced apart from each other, and a draff descending hole formed on a bottom surface thereof so as to fluidically communicate with the draff outlet port; a cover mounted on the housing to cover the opened top of the housing; a mesh drum mounted inside the housing and opened at the top and bottom thereof, the mesh drum including a plurality of mesh holes formed on the sidewall thereof; and a feed screw connected with the drive shaft of the main body so as to be rotatably mounted on the main body and disposed inside the mesh drum, the feed screw including one or more screw spirals formed on an outer surface thereof, wherein a rotary cutting member is provided below the feed screw so that the rotary cutting member is rotated together with the rotation of the feed screw, whereby when the rotary cutting member is rotated, the lower end surface of the rotary cutting member grazes the upper end surface of the draff descending hole while intersecting the upper end surface of the draff descending hole so as to perform a cutting operation.