The utility model discloses an explosion-proof tank relating to the field of explosion-proof equipment. The utility model adopts a high-molecule energy-absorbing material as a buffer layer and arranges a fire-extinguishing lining on the inner wall of an inner cylinder, so as to not only lessen the weight of a tank body, but also effectively inhibit the high temperature and flame produced from explosion, and solve the defects of the existing explosion-proof tank that the tank body is heavy and lacks mobility and the like, and the problems that the high temperature and flame produced from explosion can not be easily inhibited. The utility model comprises a top cap, a seal ring, the fire-extinguishing lining, the inner cylinder, the high-molecule energy-absorbing material layer, an outer cylinder, a foaming material layer, a housing, and a caster, wherein the inner cylinder, the outer cylinder, and the high-molecule energy-absorbing material layer form three layers of protection, so as to improve the protection capability and ensure the personnel and property safety. The utility model is mainly used for moving tank harness capable of flexibly and conveniently transferring explosives temporarily stored or transporting explosives.