The invention discloses a vehicle-mounted refrigerator shell. The shell is a rectangular shell with an inner cavity, and is provided with a battery bin and a compressor bin on the back wall; the battery bin and the compressor bin are respectively rectangular bins recessed in the shell, and are separately arranged; and a back side plate, left and right side plates, the top and a baseplate of the shell adopt a plastic integral structure. The integral structure is integrally molded, but is not an integral structure formed by bonding and splicing. The shell preferentially adopts PE plastic, has excellent impact resistance, heat resistance, low-temperature resistance, chemical medicine resistance and electric performance, is suitable for bad environments, has such characteristics as easy machining, stable product size and good surface glossiness, is easy to realize modular supply, is easy to produce and assemble, facilitates improvement of the production efficiency and reduction of the production cost, and can satisfy the use environmental requirements of a vehicle-mounted refrigerator.