PURPOSE: To provide an article of plate crossing structure and an article of honeycomb structure which is produced by notching each plate and cell side wall, mutually fitting, fixing and minimally bonding together in the plate crossing structure and the honeycomb structure being collected with a thin wall sheet and cell having an arbitrary cross-section shape.

CONSTITUTION: In the case of forming a honeycomb structure by assembling cells 1, 2, 3, the side wall 4 being made in contact with the cell 1 and 2, the side wall 5 being made in contact with the cell 1 and 3, and the side wall 6 being made in contact with the cell 2 and 3 are notched respectively, and the cells are fitted and fixed mutually. Then, only the fitting joints are minimally bonded.