Trust　Model　is　an　efficient　way　of　resolving　the　trust　problems　in　open　networks　in　which　trust　evaluation　is　a　key　issue　to　be　addressed　in　trust　management.　According　to　the　design　rules　of　trust　models,　the　problem　of　the　lack　of　dynamic　adapt　ability　in　trust　evaluating,　the　lack　of　effective　aggregation　of　trust　and　the　lack　of　considerations　to　incentive　mechanisms　and　so　on,　this　paper　introduced　the　bonus-penalty　factor　which　shows　how　reliable　is　the　direct　trust　of　the　recommend　entities　to　the　subject　and　evaluation　reliability　of　the　recommend　entities　which　is　used　to　decide　whether　the　access　object　would　adopt　the　recommendation　of　the　recommend　entities　during　the　calculation　of　the　recommend　trust.　The　measurement　of　integrated　trust　solves　the　weight　problem　between　direct　trust　and　recommendatory　trust　by　introducing　balanced　weight　factor.　Finally,　we　present　designs　of　bonus-penalty　function　and　balanced　weight　factor　and　simulations　by　Matlab　software.　©　2015　SERSC.