Trust　can　play　an　important　role　for　the　sharing　of　resources　and　information　in　open　network　environments.　Trust　quantification　is　thus　an　important　issue　in　dynamic　trust　management.　By　considering　the　fuzziness　and　uncertainty　of　trust,　in　this　paper,　we　propose　a　fuzzy　comprehensive　evaluation　method　to　quantify　trust　along　with　a　trust　quantification　algorithm.　Simulation　results　show　that　the　trust　quantification　algorithm　that　we　propose　can　effectively　quantify　trust　and　the　quantified　value　of　an　entity＇s　trust　is　consistent　with　the　behavior　of　the　entity.