The　binary　composite　Gdx　(Gd5Si2Ge2)1-x　[(x　=　0,　0.3,　0.5,　0.7,　1)]　with　layer　structures　was　synthesized　by　spark　plasma　sintering　(SPS)　technique　using　high　purity　Gadolinium　(Gd)　and　Gd5Si2Ge2　alloys　as　materials.　The　magneto-caloric　effect　of　the　composites　was　studied　by　directly　measuring　the　adiabatic　temperature　change　(Δ　Tad)　with　a　magnetic　field　change　of　1.5　T　using　a　homemade　magneto-caloric　effect　measuring　apparatus.　With　the　increasing　of　x　from　0.3　to　0.7,　the　Δ　Tad　peak　position　shifted　from　286　to　293　K　and　the　peak　values　slowly　increased　from　1.6　K　to　2.0　K　with　a　magnetic　field　change　of　1.5　T.　Meanwhile,　the　Δ　Tad　peak　of　the　composite　became　broad　as　the　Gd　content　was　increased　compared　with　that　of　the　component　of　Gd5Si2Ge2　alloy.　For　x　=　0.7,　the　Δ　Tad　of　the　composite　changed　from　1.1　K　to　2.0　K　in　the　range　of　260　K　to　310　K　with　a　magnetic　field　change　of　1.5　T.