The present invention provides a juicer comprising a base with a transmission structure, a juicing device located above the base and an upper case disposed above the juicing device, wherein the juicing device comprises: a separator configured to drain the juice and the residue of the juiced food respectively a filter configured to filter the residue of the juiced food a rotating head configured to spirally extrude the juiced food, a side wall of the separator is provided with a juice exit, a bottom of the separator is provided with a residue exit, a bottom of the filter is provided with a residue draining hole actively communicated with the residue exit, the rotating head is provided with a spiral sheet, the rotating head is disposed in the separator, the filter is sleeved between the rotating head and the separator, a first driving end of the transmission structure of the base is connected with a center of a lower end of the rotating head, the rotating head rotates reversely relative to the filter. The reduce of the parts may decrease the cost.
