The invention discloses a multi-needle type household waste complete bag breaking machine. The multi-needle type household waste complete bag breaking machine comprises an upper bearing pedestal, a shell structure rotating drum, a bag breaking box body and a lower bearing pedestal. The upper bearing pedestal is used for mounting of a rotating drum spindle and provided with a groove, and materialsare effectively prevented from entering. The shell structure rotating drum is composed of the rotating drum spindle, an upper anti-blocking spiral block, a shell structure rotating drum body, bag breaking needles, mounting seats for the bag breaking needles and a lower anti-blocking scraping plate. The bag breaking box body is composed of two half box bodies and is provided with bag breaking needles, mounting seats for bag breaking needle cavities, bag breaking box body hinges, a bag breaking box body hinge shaft and the like. The lower bearing pedestal is formed by combining a thrust bearingand a rolling bearing and can bear radial force and axial force at the same time. According to the multi-needle type household waste complete bag breaking machine, the multiple opposite bag breaking needles are arranged on the rotating drum and the box body, relative gaps are gradually reduced, the last relative gap is small like a fist, plastic bags as small as a fist can be torn, and therefore the complete bag breaking machine is achieved. The thought of breaking large objects with small objects is adopted, the gaps between needle points can be adjusted, the needle points are quite convenient to replace, and the efficient, high-quality, saving and complete bag breaking machine is achieved.