The invention discloses a rubber gasification device. The rubber gasification device comprises a pyrolysis gasification chamber, a sealing feeding hole, a gasification chamber, a clean room and the like, wherein the bottom of the pyrolysis gasification chamber is shrunk to form a slag chamber; an outlet of the slag chamber is sealed by water; a furnace grate is arranged at the bottom of the pyrolysis gasification chamber; the bottom of the furnace grate is welded with the outlet end of a blast pipe to form a wind chamber; the middle of the furnace grate is fixedly supported; slag falling channels are formed between the periphery of the furnace grate and the inner wall of the pyrolysis gasification chamber; two groups of tooth-shaped dial wheels which are rotated in different directions and rotated downwards in the slag falling channels are arranged at the slag falling channels at the left side and the right side or the front side and the rear side; the gasification chamber adopts a structure with two narrow ends and a wide middle part; a dirt removing plate is arranged in the middle of the clean room. The rubber gasification device disclosed by the invention performs step-type pyrolysis gasification, reinforces the rubber pyrolysis gasification effect, and can be used for obtaining the medium calorific value synthesis gas.