A waste gasification device comprises: a feed compressing rod (2); a slag-breaking tube (12); and an air-distributing and ash-collecting bin (18). The gasification device has a vertically installed main body having a cylindrical shape. A furnace cover (4) and a water tank sealed by the furnace cover (4) are disposed on a top portion of the main body. An upper portion of an internal chamber of the main body is provided with a feed compressing rod support (5). A feed compressing rod casing (1) is fixed to the feed compressing rod support (5) and sleeved on the feed compressing rod (2). A rotation shaft (3) is disposed in the feed compressing rod casing (1). The internal chamber of the main body below the feed compressing rod (2) is provided with an inner container (8). A gas-guiding slot is formed between an outer wall of the inner container (8) and a wall of the internal chamber of the main body. A fuel gas pipe (9) is disposed on one side of the main body near the gas-guiding slot. A pressure-relief access cover (10) and a water-sealing switch (11) are disposed on the fuel gas pipe (9). The slag-breaking tube (12) is disposed at one side of a middle portion of a combustion chamber at a bottom of the main body. The combustion chamber is provided with an electronic ignition tube (13) at a lower portion thereof and air-distributing plates (15) at a bottom thereof. An ash control chamber (16) is disposed below the air-distributing plates (15), and a bottom thereof is provided with the air-distributing and ash-collecting bin (18). The waste gasification device can be applied to a waste gasification-based power generation system to solve a continuity problem during a gasification process.
