Abstract: For the inadequate drawing problem occurred in the forming process of heavy-duty vehicle fender part, the numerical simulation technique was applied to analyzing the forming process. According to the results, the process was optimized and verified by simulation method where optimized addendum and rational draw bead parameters were obtained. The supplementary line length of addendum on the width and length direction increased to 200 mm, fillet increased to 150 mm.The height of draw beads was set as shallow one was 2.5 mm and deeper one was 4 mm.The tryout results showed that the problems occurred in the part forming process were effectively solved and the quality of the product was ensured. It has some guiding significance to the die design process of similar parts.