To　correct　the　error　in　theoretical　model　of　process　stress　accelerated　test,　a　new　calculation　method　is　proposed　The　new　method,　based　on　computer-aided　calculation,　can　significantly　reduce　the　error　of　the　model　Theoretical　data　is　calculated　using　both　the　novel　model　algorithm,　which　is　the　root　test　method,　and　the　old　model　algorithm　The　results　shows　that　the　old　model　algorithm　can　generate　errors　of　more　than　13%　m　the　activation　energy,　and　of　errors　more　than　150%　in　the　extrapolated　lifetimes　(Q　＜=　1.0　ev),　while　the　novel　model　algorithm　generates　errors　in　less　than　1%　in　activation　energy,　and　errors　less　than　-4.1%　in　the　extrapolated　lifetime