The invention discloses a juicer, includes a base, a motor assembly, a cutter disk, a collar and an elevator assembly. The elevator assembly is configured for lifting up or lowering down the collar in accordance to users operations, as a result a distance between the collar and the cutter disk is adjusted and the area of each filter hole that being covered or sealed by the collar is adjusted. The present invention can realize changing the size of filter holes, to control fiber flow through. Thus pure juice and different content of insoluble dietary fiber vegetables and fruits juice can be obtained.
