Protective thermos shell

The invention discloses a protective thermos shell. The thermos shell comprises a cylinder, a grip and a base, the cylinder and the grip are integrally formed by adopting the injection molding process, the cylinder is connected with the base through threads, the upper portion of the cylinder is sleeved with a protective belt structure, a protective belt is a high-strength elastic belt and can be directly fixed to the surface of the cylinder, a plurality of protective block structures are arranged on the surface of the protective belt, and protective blocks are connected with the protective belt through adhesives in an adhering mode. The protective thermos shell is reasonable in structural design, the protective belt structure additionally arranged on the cylinder effectively mitigates impact force happening to a liner of a thermos when the thermos is accidentally knocked over, the probability of liner breaking is lowered, and the thermos is safer and more reliable to use.