The invention discloses a kitchen waste sealed unloading system and relates to the technical field of waste treatment devices. The kitchen waste sealed unloading system comprises a sealed working room, an unloading bin and a waste collection box, wherein the unloading bin and the waste collection box are communicated with the sealed working room, an entry door and an unloading door are arranged on the sealed working room, the unloading door is arranged on the outside of the unloading bin, the waste collection box which is connected with a spiral conveyor is arranged below the unloading bin, and the unloading door and the periphery of the unloading bin are connected with an exhaust device. A waste transfer trolley enters the working room from the entry door, the waste is poured into the waste collection box by the unloading door and the unloading bin, the exhaust device is used for exhausting peculiar smell in the operation process, and secondary pollution to the surrounding environment is avoided. The kitchen waste sealed unloading system has the advantages that the structure is simple and the sealing effect is good, waste spraying and the peculiar smell in the unloading process can be prevented, the working environment is effectively improved, and the labor intensity of an operator is reduced.