The invention relates to the technical field of aluminum alloy, and discloses an aluminum alloy processing table for tubular outer wall clamping and inner wall supporting. The aluminum alloy processing table comprises a base, a whole device is supported and stabilized by using the base, through matching use of a second gear, a connecting rod and a brake rod, the inner wall of aluminum alloy is supported in the processing process of the aluminum alloy, the stress-bearing area is increased, the deformation of the inner wall in the process of clamping and fixing is prevented, and the loss in theprocessing process of the aluminum alloy; through the matching use of a pushing rod, a special-shaped rod, a disc and a clamping plate, a pipeline is clamped in the processing process of the aluminumalloy, shaking is avoided during processing, the stability of processing is ensured, and thus the processing efficiency is improved; and through the matching use of a first rotating disc, a second rotating disc, a rotating rod, a sector gear and a sliding block, the steps of outer wall clamping and inner wall supporting are linked, thus the linkage of the whole device is improved, and operation issimpler.