The invention discloses a dual-revolving hinge supporting seat. The dual-revolving hinge supporting seat mainly comprises a mounting plate and two groups of hinge components which are symmetrically distributed on the upper and lower surfaces of the mounting plate and are identical in structure, wherein the mounting plate is a square plate; a screw hole is formed in each vertex angle of the mounting plate; each group of hinge component comprises a mounting drum and two supporting seats of the same structure; the two supporting seats are vertical to the mounting plate and symmetrically welded on the two sides of the corresponding surface of the mounting plate; two parallel reinforcing plates are connected between the two supporting seats; the reinforcing plates are vertical to the mounting plate and the corresponding support seats; a through hole is formed in each supporting seat, and the two through holes are concentric; the two ends of the mounting drum are mounted in the corresponding through holes; two copper bush mounting holes are formed in the two sides of each mounting drum. According to the dual-revolving hinge support, the strength requirement under heavy load situation can be met, and the overall machining cost is low due to the welding process, and the dual-revolving hinge supporting seat can be widely applied.