Cloud　computing　is　a　convenient　and　cost　efficient　way　that　refers　to　the　running　of　software　over　a　network,　as　on　a　local　computer.　But,　what　is　cheap　and　easy,　isn＇t　always　safe.　Stor-ing　important　data　on　cloud　means　that　you　give　up　a　certain　control　of　privacy.　Privacy　pro-tection　is　a　very　important　issue　in　cloud　computing.　In　this　paper,we　focus　on　the　need　of　cloud　users　managed　services　and　propose　an　approach　for　data　protection　based　trust　mech-anism,　which　using　adaptive　mapping　resources　based　on　trust　to　ensure　the　user　data　protec-tion　initiative,　and　data　security.　The　analysis　shows　that　the　cloud　user　can　independently　con-trols　the　content　and　manner　of　services　by　using　the　approach,　which　can　achieve　the　free　de-ployment　of　resources　and　the　balance　of　user　data　protection　and　service　provided.　©　2015　SERSC.