A juice extractor includes a power assembly, a housing assembly, a snap-fitting assembly and a screw assembly; the power assembly includes an electric motor, an electric-motor housing and a rotation shaft, and the electric motor drives the rotation shaft to rotate; the screw assembly is connected to the rotation shaft, and is provided inside the housing assembly; the snap-fitting assembly connects the housing assembly to the power assembly; and the housing assembly includes a strainer assembly and a filtering-shield assembly, the strainer assembly is integrally formed by welding, the filtering-shield assembly is detachably fixed to and supported on the strainer assembly, and the filtering-shield assembly is provided with a filtered-juice separating slot that is capable of performing secondary filtration of an extracted juice. The present disclosure employs a novel structure, which has a good sealing performance, and a low manufacturing cost, and the mouthfeel of the extracted juice is better.