Co-rich　skutterudite　compounds　of　FexCo4-xSb12　(x=0-1.0)　were　prepared　by　in-situ　spark　plasma　sintering　(SPS)　at　temperature　range　from　300　to　600°C　with　Co,　Sb,　Fe　powders　as　raw　materials.　The　synthesis　condition,　structures,　morphologies　and　electrical　properties　were　investigated.　The　results　reveal　that　for　all　samples　the　skutterudite　phase　appears　at　300°C,　and　becomes　the　main　phase　with　small　amounts　of　Sb　in　the　temperature　range　from　400　to　600°C.　The　lattice　constants　increase　linearly　with　increasing　Fe　content.　The　FexCo4-xSb12　compounds　grow　as　regular　particles　and　columnar　crystals　at　600°C　with　x　&le　0.3,　but　the　quantity　of　both　particle　and　columnar　crystals　decreases　and　the　compounds　tend　to　grow　by　incurved　branch-shaped　crystals　with　x　≥　0.3.　The　electrical　conductivity　increases　with　increasing　substitution　of　Fe　for　Co　sites,　simultaneously　the　temperatures　at　which　the　highest　value　of　Seebeck　coefficient　and　power　factor　locate　increase　with　increasing　Fe　content　for　Co-rich　skutterudite　compounds　of　FexCo4-xSb12.