The　initiation　and　evolution　behavior　of　the　shear-bands　and　microcracks　in　a　Ti-based　metallic-glass-matrix　composite　(MGMC)　were　investigated　by　using　an　in-situ　tensile　test　under　transmission　electron　microscopy　(TEM).　It　was　found　that　the　plastic　deformation　of　the　Ti-based　MGMC　related　with　the　generation　of　the　plastic　deformation　zone　in　crystalline　and　shear　deformation　zone　in　glass　phase　near　the　crack　tip.　The　dendrites　can　suppress　the　propagation　of　the　shear　band　effectively.　Before　the　rapid　propagation　of　cracks,　the　extending　of　plastic　deformation　zone　and　shear　deformation　zone　ahead　of　crack　tip　is　the　main　pattern　in　the　composite.　(C)　2014　Chinese　Materials　Research　Society.　Production　and　hosting　by　Elsevier　B.V.　All　rights　reserved.