Influence　of　compounded　mineral　admixtures　on　shrinkage　and　early-age　cracking　behaviors　of　concrete　was　studied,　based　on　the　fellow　factors:　fly　ash　to　blast　furnace　slag(denoted　as　BSF)　ratio,　fly　ash-metakaolin　ratio,　BSF-silica　fume　ratio.　Research　shows　that　the　Pozzolanic　admixtures　compounded　with　cementitious　admixtures　have　complementary　and　synergistic　effect　for　hydration　progress　of　concrete,　which　can　enhance　the　volume　stability　and　cracking　behaviors　of　concrete.　However,　the　pozzolanic　admixture　compounded　with　other　pozzolanic　admixture,　two　pozzolanic　admixtures　will　grab　Ca(OH)　2　resource.　And　then　if　the　dosage　of　mineral　admixture　is　higher,　the　compounding　will　result　to　decrease　the　volume　stability　and　cracking　behaviors　of　concrete.　©　(2012)　Trans　Tech　Publications,　Switzerland.