<p>The automobile's generator shell is a kind of complex ladder-shaped part. The usual deep-drawing process has a long process route and a high production cost. In order to reduce the production cost, a few kinds of deep-drawing processes were analyzed and tested. Finally, based on the traditional deep-drawing process of ladder-shaped parts, a new deep-drawing process called borrowing material deep-drawing process was designed. The process could shorten the process route of automobile's generator shell and reduce the production cost. The deep-drawing process of automobile's generator shell reduced from the traditional 15 processes to 8 processes. So the production cost was also reduced .The borrowing material deep-drawing process could also be used in other ladder-shaped parts' production.</p>