The invention belongs to the technical field of environmental sanitation, and discloses a compressible dustbin. The compressible dustbin comprises a toothed bar, a top end toothed bar sliding chute, a top end fixing plate, a lower end toothed bar sliding chute, a supporting frame, a dustbin, a toothed bar drive motor, a toothed bar reduction gear, a compressing mechanism, a push plate, a multi-stage hydraulic cylinder, or the like. The compressing mechanism employs a rotating structure with two opposite rollers. In the process of relative rotation, garbage sticks on surfaces of the rollers and enter the dustbin through the space between the rollers. When the volume of the garbage entering the dustbin is bigger than the volume of the garbage stored in the dustbin at present, the garbage are compressed. While compressing, the compressor moves upward under the actuation of the toothed bar, thereby increasing the space of the dustbin for storing the garbage. Due to the fact that the garbage can enter the dustbin continuously, the volume of the compressed garbage can be conveniently controlled every time, and accordingly providing convenience for transporting the compressed garbage in same volumes. The compressible dustbin has the advantages of continuously compressing the garbage, and conveniently controlling the compressed volume; therefore, the compressible dustbin is strong in practicality, and is of a substantially good market prospect.