The invention discloses a recovery treatment machining line used for generating aluminum scraps during hub machining. The recovery treatment machining line comprises an aluminum scrap centrifugal machine, an aluminum scrap drying device and an extrusion cake-forming device, wherein a first conveyer is connected to the inlet of the aluminum scrap centrifugal machine; the right side of the aluminumscrap centrifugal machine is rotationally installed on a centrifugal machine base; a rotary cylinder is connected to the left side of the aluminum scrap centrifugal machine; the rotary cylinder is installed on the centrifugal machine base; a second conveyer which is vertically installed is installed at the right side of the aluminum scrap centrifugal machine; the outlet of the second conveyer is located in the top and connected with a corrugated pipe which is vertically installed; and the aluminum scrap drying device is connected to the lower-end outlet of the corrugated pipe. According to themachining line, a cutting solution in the aluminum scraps is dried through the treatment of the centrifugal machine at first, the hot air blown out by the a hot-air blower heats a conveying pipe, andthe waste aluminum scraps in a sleeve can be driven to move in the sleeve through the rotation of a stirring blade, so that the waste aluminum scraps are uniformly heated, and then the drying efficiency for the waste aluminum scraps is increased; and then the waste aluminum scraps are extruded into cakes, so that transport and use are facilitated.