Heating cooking box

A heating cuisine box comprises a lunch box body, an upper cover and a rubber strip, a storage cavity used for containing articles is arranged in the lunch box body, the lunch box body and the upper cover are mutually sealed and covered, a protruding upper flange is arranged at the upper end of the lunch box body, the upper flange is inserted into a lower groove formed in the upper cover, and the rubber strip is arranged in the lower groove. Two symmetrically distributed clamping grooves are formed in the outer side of the upper flange; the upper cover is provided with two outer installation grooves corresponding to the clamping grooves respectively, inner installation openings corresponding to the clamping grooves are formed in the outer installation grooves, torsional spring lock catches are installed on the inner installation openings, torsional spring pieces are arranged in the torsional spring lock catches, and the torsional spring lock catches penetrate through the inner installation openings to be in c