The invention discloses a side garbage collection device for a compression type garbage vehicle. The side garbage collection device for the compression type garbage vehicle comprises a garbage collection device body (6) which is arranged on the side of a box body (4) and composed of a can turning oil cylinder (14), an upper cover plate (15), two pull rods (16), a cross beam (17), a can compression device I (18), a can hanging device (19) and a can compression device II (20). The can turning oil cylinder (14) drives the upper cover plate (15), the upper cover plate drives the pull rods (16), and then the pull rods (16) drive the can hanging device (19) hinged to the pull rods; and when the can hanging device (19) lifts up a garbage can, the can compression device I (18) ascends along with the pull rods (16) after compressing the garbage can, so that garbage can be dumped. By the adoption of the side garbage collection for the compression type garbage vehicle, the problem that a can compression device is stuck is solved effectively, meanwhile the situation that garbage is likely to be spilled out of the edge of a box body in the garbage dumping process is avoided effectively as well, meanwhile unbalance loading of a push plate is reduced, and the service life of the side garbage collection device is prolonged.