This devulcanizing machine is a kind of new sweetener adopting a novel devulcanizing technique. Comparing with the traditional water-oil sweetener, it has some advantages. For example, it needn’t to cut the abandoned rubber to small pcs and shortens the desulphurization time. The plasticizer and regenerant can be put into the devulcanizing machine with waste sizing materials. No devulcanizing sewage is produced in this course.