Proposed in this paper is a fast automatic positioning method based on the constrained projection of meshes,which is embedded in the framework of multi-job submitting system.In order to get a more accurate initial position between the sheet and the tool,the real forming result of the previous stage is utilized to replace the initial sheet to adjust the tool position before the current stage is submitted to the solver.As compared with some other positioning methods for multi-stage simulation,the proposed method is of low time cost,good stability and high positioning accuracy,and it effectively solves the positioning problem caused by the vertical wall of tools.Simulated results of the multi-stage forming process of an automobile body demonstrate that the proposed method is feasible.