Abstract: In the plant for collecting and briquetting domestic waste the housing has loading and discharge openings and coaxially accommodates therein a chamber for forming domestic waste into briquettes and a conveyer screw for compacting the domestic waste, operatively connected to a reversible drive. The chamber adjoins the screw and has mounted therein an abutment spanning the cross-sectional area of the chamber. The abutment is mounted in the chamber for motion therein under the action of the domestic waste being formed into a briquette and being advanced by the effort of the rotating conveyer screw. The chamber is operatively connected with a drive for being moved axially to release a briquette that has been formed and for being returned into the initial position.