Develop ing new p roduct and accelerat ing the update of p roduct are impo rtan t m ean s fo r en terp rise to con t inuou s operat ion and developm en t. W ith the advance of C IM S techno logy, the t radi2 t ional non2quan t if ied m ethods are no t sat isfacto ry to the m anagers of en terp rises to m ake the decision abou t new p roduct developm en t. Th is paper p ropo ses a quan t if ied app roach fo r new p roduct develop2 m en t p lann ing. It classif ies all p roduct s in to 4 differen t catego riesw ith differen t p rof it cu rves and pa2 ram eters. The cu rve’s param eters of each p roduct can be determ ined by it s econom ic characters. Based upon the quan t if ied p roduct descrip t ion, th is paper p resen t s a 021 sem i2Inf in ite p rogramm ing model to so lve the p rob lem of new p roduct developm en t p lann ing.