As an automobile outer panel, taillight supporter holds several features such as three-dimensional surface, asymmetry shape, large distortion, large figuration depth, large variety of surface structure, the complexity of the flow of the material and high quality of surface. As for the figuration of a single part, it is difficult to ensure the direction of the press, further more, it needs to increase the supplement material of the craftwork and brings the side force. Considering its symmetry, two mould process was adopted, which reduced forming difficulty, improved the utilization rate of the material and also favored to the flow of the metal in the process of the deep drawing. Numerical simulation technique has been used to simulate the forming process. Based on the distribution of the stress and the strain, it forecasted wrinkle, cracking and shaping degree in the sheet forming process. Furthermore, it optimized the blank’s figure, the supplement surface of the craftwork and the distribution and the resistance of the draw bead. The technical parameters produced good forming quality after optimizing. The simulation result coincided with the physical test. This research could offer references for the similar design.