Featured　by　high　energy　density,　low　combustion　pollution　and　large　quantity,　natural　gas　hydrate　has　become　one　of　the　research　hotspots　in　Sanlutian　Field　of　Muri　Coalfield　since　2008,　when　China　first　drilled　natural　gas　hydrate　samples　in　the　permafrost　area　of　Qilian　Mountains,　Qinghai-Tibet　Plateau.　However,　the　study　on　the　controlling　factors　of　gas　hydrate　accumulation　is　still　shallow,　which　hinders　the　exploration　and　development　of　natural　gas　hydrate　resources.　The　controlling　factors　of　gas　hydrate　accumulation　mainly　include　temperature　and　pressure　conditions,　gas　source　conditions,　sedimentary　conditions　and　structural　conditions,　among　which　structural　conditions　are　the　important　one.　In　this　paper,　the　Sanlutian　Field　of　Muri　Coalfield　in　the　southern　margin　of　Qilian　Mountains　is　selected　as　the　main　research　area　and　natural　gas　hydrate　is　taken　as　the　research　subject.　According　to　the　sample　test　results,　the　geological　structure　pattern　is　inferred,　and　the　occurrence　characteristics,　gas　source　and　hydrate　composition　of　Sanlutian　gas　hydrate　samples　are　further　obtained.　Finally,　the　gas　hydrate　accumulation　model　at　the　end　of　structure　is　summarized　and　illustrated.　©　2020,　Tech　Science　Press.　All　rights　reserved.