Packet　loss　degrades　the　performance　of　multicast　in　various　cloud　services　and　reliability　still　plays　a　critical　role　in　group　communication　within　data　center　network　(DCN).　However,　existing　reliable　multicast　algorithms　either　cannot　satisfy　the　stringent　requirement　of　minimizing　repair　delay　or　do　not　utilize　network　bandwidth　effectively.　In　this　paper,　we　present　MTM,　a　novel　reliable　multicast　for　DCN.　By　leveraging　plentiful　link　resources　in　DCN,　MTM　constructs　multiple　edge-disjoint　multicast　trees　to　transmit　data　concurrently　and　builds　isolated　repair　path　between　adjoining　group　members　belonging　to　different　delivery　trees　respectively　for　packet　recovery.　Therefore,　MTM　improves　error　resilient　ability　in　the　presence　of　various　levels　of　packet　loss.　Furthermore,　we　propose　the　implementation　of　MTM　in　BCube.　Extensive　experiments　are　conducted　and　the　evaluation　results　demonstrate　clearly　that　MTM　achieves　low　recovery　delay　and　high　application　throughput.