The invention provides a garbage compression device. The garbage compression device comprises a casing, and a compression device assembly, wherein the casing comprises a compression box body and a bracket; the compression box body is provided with a receiving space, a garbage compression port, a garbage inlet and a sewage hole; the sewage hole communicates with the inside and outside of the compression box body for discharging the liquid in the receiving space out of the compression box; the bracket is arranged at one side of the garbage compression port of the compression box; the compressiondevice assembly includes a driving portion and a compression head; the driving portion is fixed on the bracket; and the compression head is inserted into the compression box through the garbage compression port; the driving portion is connected with the compression head to drive the compression head to compress the garbage in the receiving space. By means of the technical scheme of the garbage compression device, the problems that leachate cannot be discharged in prior art and the garbage compressor causes secondary pollution to the environment during the working process are solved.