The　effectiveness　of　most　quantum　signature　schemes　reported　in　the　literature　can　be　verified　by　a　designated　person,　however,　those　quantum　signature　schemes　aren＇t　the　real　traditional　designated　verifier　signature　schemes,　because　the　designated　person　hasn＇t　the　capability　to　efficiently　simulate　a　signature　which　is　indistinguishable　from　a　signer,　which　cannot　satisfy　the　requirements　in　some　special　environments　such　as　E-voting,　call　for　tenders　and　software　licensing.　For　solving　this　problem,　a　real　quantum　designated　verifier　signature　scheme　is　proposed　in　this　paper.　According　to　the　property　of　unitary　transformation　and　quantum　one-way　function,　only　a　verifier　designated　by　a　signer　can　verify　the　＂validity　of　a　signature＂　and　the　designated　verifier　cannot　prove　to　a　third　party　that　the　signature　was　produced　by　the　signer　or　by　himself　through　a　transcript　simulation　algorithm.　Moreover,　the　quantum　key　distribution　and　quantum　encryption　algorithm　guarantee　the　unconditional　security　of　this　scheme.　Analysis　results　show　that　this　new　scheme　satisfies　the　main　security　requirements　of　designated　verifier　signature　scheme　and　the　major　attack　strategies.