PURPOSE: To provide the method for manufacturing a honeycomb panel excellent in the workability for assembly, enhanced in, product accuracy, and capable of easily forming a large-size panel at a low cost.

CONSTITUTION: A sheet material 11 is uncoiled, glued 13 at prescribed interval by a gluing roll 12, and cut by a prescribed length, then plural sheets thereof are laminated. The sheet material 11 laminated with plural sheets is heated and pressed by a press 14 to form a block 15, which is then cut by a cutter 16 to form a cut block 17. The cut block 17 is extended to form a core body 18; face plates 19a, 19b are laminated on both end faces of this core body 18; the core is then put into a heating furnace while the face plates 19a, 19b pressurized by a pressurizing means 20, thereby a brazed honeycomb panel is formed.