The invention discloses a metal-welded honeycomb cabinet. The cabinet includes a cabinet body, cabinet doors and drawers; the cabinet body is formed through splicing and combination of a transverse cabinet plate, vertical cabinet plates and a rear baffle, and the transverse cabinet plate, the vertical cabinet plates and the rear baffle are connected together through self-tapping screws, and solidaluminum strips are embedded into the two sides of the transverse cabinet plate, the two sides of each vertical cabinet plate and the two sides of the rear baffle in advance; the middle of the inner side of the transverse cabinet plate is provided with lining plates through welding, the lining plates and the two sides of the transverse cabinet plate form a connection platform, the inner sides of the lining plates are fixedly provided with slide grooves through bolts, separation plates are inserted in the slide grooves, the cabinet doors are symmetrically connected with the inner sides of the vertical cabinet plates and the separation plates through hinges, and the drawers are connected with the inner sides of the separation plates through slide rails. The cabinet is formed through splicingand combination of brazed aluminum honeycomb boards, the overall strength of the cabinet is effectively improved, the whole cabinet is environmentally friendly and free from pollution, and the cabinet can be recycled in the later period.