An　updated　elastoplastic　model　is　presented.　The　model　turns　to　the　updated　Cam　clay　model＇s　yield　function　to　describe　the　characteristics　of　damaged　soft-clay　and　suggests　a　new　varied　law　of　the　damaged　variable.　Owing　to　Cam　model　based　on　the　remolded　samples　test,　the　remolded　soil　characteristics　can　be　exactly　described.　The　Cam　parameters　possess　a　comparatively　perfect　detecting　methods　and　accumulate　various　empirical　values.　The　updated　elastoplastic　model　can　be　easily　popularized　and　applied　to　engineering.