(Pb0.94-xBaxLa0.04)[(Zr0.7Sn0.3)(0.88)Ti0.12](x=0,　0.02,　0.04,　0.06)　were　fabricated　and　the　effect　of　Ba　content　on　the　dielectric　and　energy　storage　properties　was　studied.　The　Ba　dopant　will　weaken　the　stability　of　AFE　phase　and　thus　lower　the　transition　field.　As　a　result,　the　recoverable　energy　density　declines　while　the　hysteresis　loop　will　be　slimmer.　Also,　the　Curie　temperature　will　decrease　with　increasing　Ba　content　but　the　maximum　dielectric　constant　increases.　The　temperature　dependence　of　the　energy　storage　properties　and　dielectric　tunability　when　x=0.06　were　studied.　The　stored　and　recoverable　energy　density　both　decline　but　the　efficiency　increases　with　temperature　rise.　The　dielectric　tunability　is　promising　when　x=0.06　at　20　degrees　C　but　soon　becomes　weaker　at　80　degrees　C.