The　joint-measurement　(JM)　attack　is　the　most　powerful　threat　to　the　database　security　for　existing　quantum-key-distribution　(QKD)-based　quantum　private　query　(QPQ)　protocols.　Wei　et　al.　(2016)　[281　proposed　a　novel　QPQ　protocol　against　the　JM　attack.　However,　their　protocol　relies　on　two-way　quantum　communication　thereby　affecting　its　real　implementation　and　communication　efficiency.　Moreover,　it　cannot　ensure　perfect　user　privacy.　In　this　paper,　we　present　a　new　one-way　QPQ　protocol　in　which　the　special　way　of　classical　post-processing　of　oblivious　key　ensures　the　security　against　the　JM　attack.　Furthermore,　it　realizes　perfect　user　privacy　and　lower　complexity　of　communication.　(C)　2016　Elsevier　B.V.　All　rights　reserved.