The utility model discloses an explosion-proof fuse tube, and an explosion-proof fuse and an explosion-proof fuse piece thereof, and belongs to the field of power equipment. The fuse mainly comprisesa fuse piece, the fuse piece comprises a middle piece body, contact piece bodies are arranged on the two sides of the middle piece body respectively, the contact piece bodies are connected with a fuseconnecting column plate through fasteners, and concave grooves A are formed in the contact piece bodies; the contact piece body is of a structure with the thick middle and the gradually-thinned periphery, a through hole is formed in the contact piece body, an annular groove matched with the contact piece body is formed in the fusing connecting column plate, and a concave groove C is formed in theannular groove. According to the technical scheme of the utility model, the fuse link and the fuse connecting column plate are additionally provided with the recessed grooves. A deformation space isprovided for the fuse link, meanwhile, the contact area of the deformed fuse link and the fusing connecting column plate is increased, and the problems that current is frequently overloaded, the fuselink expands with heat and contracts with cold at high frequency, a gap is generated between the fuse link and the fusing connecting column plate, and the fuse link is frequently fused and broken aresolved. The utility model is mainly used for electrical equipment such as motors and air compressors.