Abstract: Although green sand squeeze molding is very popular in casting production, from the point of view of mechanics it is a complicated process which includes material nonlinearity, geometrical nonlinearity, and contact nonlinearity problems. All these cause difficuties in simulating the squeeze moulding process numerically. Nonlinear Finite Element Method is an effective numerical tool to solve these problems. In this paper a commercial software has been used to simulate the stress field of green sand moulding. Results show that the present approach is promissing.