The invention discloses a biomass waste residue squeezer which is provided with a power box, a transmission shaft, a bearing seat, a conical screw shaft, a filtering net barrel, a lining net barrel, a reinforcing rib frame, a shell and an anti-skidding cylinder, and is characterized in that: the filtering net barrel, the lining net barrel, the reinforcing rib frame and the shell form a multi-layer combined type conical shell; a feed port is arranged at a big end of the conical shell, and a discharge port is arranged at a small end; the anti-skidding cylinder is arranged at the discharge port at the small end of the conical shell; and the section of the cylinder opening is a regular hexagon. The biomass waste residue squeezer disclosed by the invention is developed and designed based on the biomass raw materials such as papermaking waste residue, and has unique structure, high squeezing efficiency and large dehydration dryness; and the biomass waste residue squeezer not only can be used for dehydrating and drying the papermaking waste residue, but also can realize powerful efficient dehydration of other biomass garbage such as sawdust, waste slurry, sludge and the like, thereby having a wide application range.