Software　behavior　research　on　behavioral　statements　is　mostly　software　behavior　analysis　for　specific　software,　and　the　characterization　of　software　behavior　is　only　obtained　by　simple　buried　point　monitoring　or　static　analysis.　In　this　regard,　this　paper　proposes　a　model　for　credibility　analysis　of　most　software　behaviors　based　on　the　detection　sandbox　environment　and　the　actual　operating　environment.　The　research　developed　a　trusted　plug-in　based　on　the　Kylin　operating　system　platform.　It　adopted　the　idea　of　＇consistent　words　and　deeds＇,　and　used　the　actual　behavior　statement　and　the　trusted　behavior　in　the　trusted　behavior　statement　database　for　tested　evaluation.　In　the　aspect　of　software　behavior　tested　measurement,　a　behavior　statement　judgment　model　based　on　cosine　similarity　algorithm　is　proposed　to　judge　the　reliability　of　software　behavior.　Experimental　results:　the　trusted　plug-in　platform　was　able　to　perform　credibility　analysis　on　most　software　behaviors,　and　the　introduced　performance　overhead　was　relatively　low.　It　had　a　high　ability　to　identify　the　credibility　of　software　behaviors.　It　provides　new　ideas　for　studying　the　credibility　of　software　behavior　on　the　Kylin　operating　system　platforms.　©　2019　Published　under　licence　by　IOP　Publishing　Ltd.