The self-heating convenient box comprises a lunch box, a bottom support, an inner support
assembly and a box cover, the bottom support is arranged on the lower side of the lunch box, the inner support
assembly is installed on the inner side of the lunch box in an embedded mode, the box cover is connected to the upper end of the lunch box in an embedded mode, the lunch box is composed of a main box body, an air outlet hole, a heat insulation block and a convex ring, and the convex ring is connected with the inner support
assembly in an embedded mode. An air outlet is formed in the lower end face of the main box body, a heat insulation block is arranged on the outer side of the main box body, a convex ring is arranged on the inner side of the main box body, and the bottom support is composed of a heating box, a supporting table, an anti-overflow ring, a
handle, a first reinforcing rib and a heat insulation ring. According to the self-heating convenient box with the inner container provided with the ventilation holes, a ventilation structure is adopted, high-temperature steam can be conveniently and uniformly dispersed in the
meal box in the heating process, so that the uniform
heating effect of food is effectively guaranteed, in cooperation with the effect of the box cover, too fast heat dissipation can be effectively avoided, the heating quality is guaranteed, and the whole heating convenient box is simple in structure and convenient to use. The device is convenient to operate and suitable for wide popularization.