Bulk　Mn1.2Fe0.8-P0.76Ge0.24　alloy　was　prepared　by　mechanical　milling　and　subsequent　spark　plasma　sintering　technique.　Effect　of　annealing　on　the　structure　and　magneto-caloric　properties　of　the　alloy　was　investigated.　XRD　results　show　that　both　sintered　and　annealed　samples　possess　a　hexagonal　Fe2P-type　crystal　structure.　After　annealing,　ferromagnetic　impurity　Fe3Mn4Ge6,　which　exists　in　the　sintered　sample,　was　eliminated　from　the　alloy.　Furthermore,　the　lattice　constants　a　and　c　change　noticeably,　leading　to　a　decrease　in　c/a　ratio,　while　the　cell　volume　almost　remains　invariable.　As　a　result,　the　Curie　temperature　of　the　alloy　increases　from　253　K　to　298　K,　but　the　maximum　magnetic　entropy　change　decreases　from　37.5　to　11.7　J.kg.K-1　for　2　T　magnetic　field　change.　On　the　other　hand,　the　thermal　hysteresis　of　M-T　curves　around　T-C　upon　heating　and　cooling　is　14　and　8　K　for　the　as-sintered　and　the　annealed　sample,　respectively,　showing　evident　change.