Nanostructured-alloy-type　anodes　have　received　great　interest　for　high-performance　lithium-ion　batteries　(LIBs).　However,　these　anodes　experience　huge　volume　fluctuations　during　repeated　lithiation/delithiation　and　are　easily　pulverized　and　subsequently　form　aggregates.　Herein,　an　efficient　method　to　stabilize　alloy-type　anodes　by　creating　defects　on　the　surface　of　the　metal　oxide　support　is　proposed.　As　a　demonstration,　PPy-encapsulated　SnS2　nanosheets　supported　on　defect-rich　TiO2　nanotubes　were　produced　and　investigated　as　an　anode　material　for　LIBs.　Both　experimental　results　and　theoretical　calculations　demonstrate　that　defect-rich　TiO2　provides　more　chemical　adhesions　to　SnS2　and　discharge　products,　compared　to　defect-poor　TiO2,　and　then　effectively　stabilizes　the　electrode　structure.　As　a　result,　the　composite　exhibits　an　unprecedented　cycle　stability.　This　work　paves　the　way　to　designing　durable　and　active　nanostructured-alloy-type　anodes　on　oxide　supports.