Optical module shell and optical module

The invention discloses an optical module shell and an optical module, wherein the shell comprises a first shell and a second shell, the first shell comprises a first bottom plate and side walls on two sides of the first bottom plate; the second shell comprises a second bottom plate and a heat dissipation structure, and the heat dissipation structure comprises two sheet-shaped fins which are located on the two sides of the second bottom plate and extend in the length direction of the shell; the second shell covers the first shell, and the first bottom plate, the side walls on the two sides of the first bottom plate and the second bottom plate form a cavity; and the flaky fins on the two sides of the second bottom plate are at least partially attached to one sides of the side walls, so that the flaky fins are in heat conduction connection with the side surfaces of the side walls. According to the shell, the interface position of the two shells is improved, so that the two shells have a larger contact area, the