Abstract: A neural network model with three layers of BP algorithm was built with the aid of neural network tool box in software Matlab.After trained by a series group of data collections sampled from testing,this model could finally achieve the specified goal error and then was validated by another group of data collections from testing.The relative error between simulation results and test results was limited within 1%.So this neural network model could be effective in judging whether the rationality of set forming characteristic parameters was good or not in advance of actual testing,and also established a good preconditional basis for the following intelligentization in sheet deep drawing.