Nanosized　ZnO/lead　zirconate　titanate　(ZnO/PZT)　ceramic　matrix　composites　were　prepared　by　a　traditional　sintering　process　in　this　study.　Dependence　of　the　dielectric　permittivity　of　the　ZnO/PZT　composites　on　frequency　and　temperature　was　studied.　We　observed　the　remarkable　dependence　of　dielectric　permittivity　of　the　ZnO/PZT　composites　on　the　concentration　of　ZnO,　frequency　and　temperature.　A　relatively　high　dielectric　permittivity,　which　is　more　twice　higher　than　that　of　pure　PZT　ceramics,　was　found　in　the　ZnO/PZT　composites.　The　results　showed　that　the　addition　of　nanosized　ZnO　had　an　obvious　influence　on　the　dielectric　permittivity　of　the　ZnO/PZT　ceramics　matrix　composites.　(C)　2007　Published　by　Elsevier　B.V.