A juicer including a draff control unit, the juicer comprising: a mainbody having a drive shaft configured to rotate; a housing opened at a top thereof and mounted at an upper portion of the mainbody, the housing including a juice outlet port and a draff outlet port formed at a lower 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 configured to cover the top of the housing; a mesh drum mounted in the housing, opened at the top and bottom thereof, and having at least one mesh holes formed on a side wall thereof; a feed screw rotatably coupled to an upper portion of the mainbody in such a manner that the drive shaft of the mainbody is inserted into a lower end of the feed screw, the feed screw being disposed in the mesh drum and having screw blades protrudingly formed on the outer circumferential surface thereof; and a draff control unit including an opening and closing plate consisting of a rear portion and a front portion, characterized in that the rear portion is elastically not deformable by a force applied downwardly by draff discharged to the draff outlet port through the draff descending hole and the front portion is elastically deformable by the force applied downwardly by draff, the opening and closing plate is configured such that it completely opens the draff outlet port, and such that in the case where the opening and closing plate closes at least partially the draff outlet port, the draff outlet port is closed by only the front portion, only the rear portion, or a part of the front portion and a part of the rear portion. a mainbody having a drive shaft configured to rotate; a housing opened at a top thereof and mounted at an upper portion of the mainbody, the housing including a juice outlet port and a draff outlet port formed at a lower 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 configured to cover the top of the housing; a mesh drum mounted in the housing, opened at the top and bottom thereof, and having at least one mesh holes formed on a side wall thereof; a feed screw rotatably coupled to an upper portion of the mainbody in such a manner that the drive shaft of the mainbody is inserted into a lower end of the feed screw, the feed screw being disposed in the mesh drum and having screw blades protrudingly formed on the outer circumferential surface thereof; and a draff control unit including an opening and closing plate consisting of a rear portion and a front portion, characterized in that the rear portion is elastically not deformable by a force applied downwardly by draff discharged to the draff outlet port through the draff descending hole and the front portion is elastically deformable by the force applied downwardly by draff, the opening and closing plate is configured such that it completely opens the draff outlet port, and such that in the case where the opening and closing plate closes at least partially the draff outlet port, the draff outlet port is closed by only the front portion, only the rear portion, or a part of the front portion and a part of the rear portion.