The invention discloses a common mode manufacturing method for an automobile covering part. The method includes the steps of drawing, trimming deflashing punching, flanging shaping and shaping side cutting. The process technology is used for inner plate parts on the side periphery. At first, the basic shape of each part is drawn out by means of a square plate, then shape holes in the periphery and the middle of each part and transition holes needing to be machined at later procedures are punched, shaping is carried out on high required positions and small R angles, flanging is carried out on gluing supporting positions and periphery modeling, and finally positions with incomplete trimming deflashing on the periphery of former procedures are cut off, side trimming is conducted on a part of each part, process holes, positioning holes and installation holes are punched, and the two parts are separated and taken out of different positions to be stored. The process technology breaks through the thought that one kind of parts is produced through a pair of molds, the utilization rate of materials is improved, mold investment and material investment of the parts are reduced, investment of staff, equipment and production time in procedures of the later period is eliminated, and the method plays an active role in the overall energy conservation effect enhancement plan of enterprises.