The present disclosure provides a squeezing threaded rod, a squeezing component and a food processor. The squeezing threaded rod includes: a rod body, and the rod body includes a feeding segment, a squeezing segment connected with the feeding segment and a residue discharge segment connected with the squeezing segment; and the area of the cross section of the rod body gradually increases from the feeding segment to the squeezing segment. In the squeezing threaded rod provided by the embodiments of the present disclosure, the stress direction of juice squeezing and residue discharge thereof is consistent with the thrust direction of the rod body, in this case, the juice squeezing force and the residue discharge force can be increased, the food residues at a residue discharge opening can be discharged more easily, then the phenomenon that the food residues block the residue discharge opening can be reduced.