To　suppress　the　depolarization　phenomenon　of　K0.5Bi0.5TiO3　and　improve　the　ferroelectric　properties,　lead-free　ferroelectric　ceramic　composite　K0.5Bi0.5TiO3:ZnO　(KBT:ZnO)　was　prepared　by　two-step　solid　phase　synthesis,　using　K2CO3,　Na2CO3,　Bi2O3　and　ZnO　as　raw　materials.　The　microstructure　and　electric　properties　of　the　composite　ceramic　were　analyzed　by　X-ray　diffraction,　scanning　electron　microscopy,　ferroelectric　and　dielectric　tests.　The　results　show　that　the　incorporation　of　20%(in　mole　percent)　ZnO　leads　to　the　formation　of　the　third　phase　Zn2TiO4　compared　with　pure　KBT　phase,　and　improves　the　polarizability　and　ferroelectricity　of　KBT.　Impedance　analysis　shows　that　there　is　only　electronic　conduction　in　the　ferroelectric　composite　ceramics.　Especially,　the　incorporation　of　ZnO　suppressed　the　phase　transition　of　the　normal　ferroelectric　into　relaxation　ferroelectric,　which　is　of　importance　for　the　research　and　application　of　KBT-based　materials.　©　2017,　Editorial　Department　of　Journal　of　Beijing　University　of　Technology.　All　right　reserved.