The　single　phase　p-type　filled　skutterudite　CemLanFeCO3.0Sb12　compounds,　where　voids　were　filled　by　double　elements,　were　synthesized　by　Spark　plasma　sintering　(SPS)　using　powders　of　Co,　Sb,　Fe　and　rare　earth　Ce,　La　as　starting　materials.　The　thermoelectric　properties　of　them　were　also　studied.　The　results　indicated　that　the　electrical　conductivity　of　CemLanFeCO3.Sb-0(12)　compounds　decreased　with　Ce　and　La　filling　fraction.　The　electrical　conductivity　decreases　with　the　filling　fraction　of　the　Ce　and　La,　while　the　lattice　constant　and　the　Seebeck　coefficient　of　the　compounds　increase　with　the　filling　fraction　of　the　Ce　and　La.　Compared　with　the　same　filling　fraction,　the　lattice　thermal　conductivity　of　CemLanFeCo3.0Sb12　is　found　to　be　smaller　than　that　of　Ce.　FeCo3.0Sb12　and　LanFeCo3.0Sb12.　The　compounds　with　m　+　n　=　0.3　had　a　minimum　value　of　thermal　conductivity　in　this　invertigation,　indicating　that　when　the　Sb　voids　in　the　skutterudite　structure　were　filled　by　Ce　and　La　the　coupling　rattling　and　the　irregular　distribution　between　the　two　filler　ions　that　give　rise　to　the　mass　change　of　atom　lead　to　the　additional　phonon　scattering　produced　by　lattice　aberration.　The　compound　Ce0.1La0.2FeCo3.0Sb12　has　the　dimensionless　figure　of　merit　ZT　=　0.60　at　800　K.