A　new　lead-free　(1-x)(Bi1/2K1/2)TiO3-xBi(Mn2/3Sb1/3)O-3　(BKT-BMS)　piezoelectric　ceramics　were　prepared　by　conventional　solid-state　route.　The　experiments　show　that　the　addition　of　BMS　induces　the　occurrence　of　a　mixed　tetragonal　and　pseudocubic　phases,　and　the　fraction　of　tetragonal　to　pseudocubic　phases　closes　to　50:50　around　the　composition　x=0.015,　at　where　the　dielectric,　ferroelectric　and　piezoelectric　properties　is　optimized.　It　is　highlighted　that　the　T-d　for　the　composition　x=0.015　keeps　at　an　adequately-high　level　around　205　degrees　C.　All　these　competitive　properties　of　the　composition　x=0.015　demonstrate　the　potential　application　for　lead-free　piezoelectric　ceramics　over　a　broad　temperature　range.