The invention relates to a trash collection device which comprises a bin body and a fermentation chamber. A first cavity, a second cavity and a third cavity are formed in the bin body. A first opening is formed in the first cavity. A second opening is formed in the third cavity. The first cavity is communicated with the second cavity. An ignition device is arranged in the second cavity. The third cavity is separated from the first cavity and the second cavity. The fermentation device is arranged at the bottom of the bin body and communicated with the third cavity. Trash is classified through the first cavity and the third cavity, incombustible trash is stored in the third cavity, combustible trash is conveyed to the second cavity from the first cavity to be combusted in the second cavity, the trash can be treated quickly through trash classification, the influence on the environment due to stacking of the trash for too long time is avoided by combusting the combustible trash, the trash delivery amount is reduced, and manpower is saved greatly; and the load on trash treatment plants is lowered, and the influence on the surrounding environments of the trash treatment plants is lowered.