In　order　to　provide　life　cycle　information　for　the　products　whole　life　cycle　design,　based　on　feature-based　products　whole　life　cycle　design　integrated　information　model,　prediction　was　suggested　to　carry　out　on　few　existing　similar　products　for　life　cycle　data　by　application　of　Gray　Model　(GM),　and　to　enlarge　sample　volumes　so　as　to　get　most　matching　distribution　type　through　analysis　of　gray　association　degree.　Hence　life　cycle　index　associated　with　products　whole　life　cycle　design　was　predicted.　Finally,　the　prediction　module　of　life　cycle　was　developed　by　VC++6.0,　and　the　application　example　was　also　presented.