To　solve　single　point　failture,　this　paper　proposes　a　distributed　certificate　storage　system　by　using　DHT.　The　robustness　and　failure　tolerance　of　the　distributed　hash　table　(DHT)　network　can　provide　an　extremely　stable　storage　for　certification,　distribution,　and　cancellation.　In　this　circumstance,　the　user　can　obtain　and　verify　the　certificate　that　he　needs,　even　all　servers　are　off-line.