Filled　skutterudite　compounds　(Ce,La)(y)FeCo3Sb12　with　y=0.1　similar　to　0.3　were　synthesized　by　solid　state　reaction-Spark　plasma　sintering　(SPS)　using　powders　of　Co,　Sb,　Fe　and　rare　earth　Ce　as　starting　materials,　and　the　thermoelectric　properties　of　the　compounds　were　also　studied.　It　is　shown　that　there　is　a　little　Sb　in　filled　skutterudite　compounds　(Ce,La),FeCo3Sb12　with　y=0.1　similar　to　0.3　at　900K.The　lattice　constant　and　the　Seebeck　coefficient　of　the　compounds　increases　with　the　filling　fraction　of　the　Ce　and　La,　while　the　thermal　conductivity　and　electrical　conductivity　is　greatly　reduced　The　compounds　had　a　minimum　value　of　thermal　conductivity　with　y=0.3,　indicating　that　it　is　the　coupling　rattling　and　the　irregular　distribution　between　the　two　filler　ions　of　La　and　Ce　that　give　rise　to　the　mass　change　of　atom　and　the　additional　phonon　scattering　produced　by　lattice　aberration　when　the　Sb　voids　in　the　skutterudite　structure　were　filled　by　Cc　and　La.　The　compound　of　Ce0.1La0.2Fe1.0Co3.0Sb12　with　Co-rich　had　a　maximum　value　of　the　dimensionless　figure　of　merit　ZT=0.46　at　773K.