Although　metal-organic　framework　(MOF)　glasses　have　exhibited　high　potential　to　be　applied　as　anode　materials　for　lithium-ion　batteries　(LIBs),　their　electrochemical　performances　still　need　to　be　greatly　improved　to　match　the　rapid　development　of　green　energy　technologies.　Silicon　is　a　promising　candidate　for　the　next　generation　of　LIB　anode　but　suffers　from　vast　volume　fluctuations　upon　lithiation/delithiation.　Here,　we　present　a　strategy　to　in　situ　grow　a　kind　of　MOF,　namely,　cobalt-ZIF-62　(Co(imidazole)1.75(benzimidazole)0.25)　on　the　surface　of　Si　nano　particles,　and　then　to　transform　the　thus-derived　material　into　Si@ZIF-glass　composite　(SiZGC)　through　melt-quenching.　The　robust　hierarchical　structure　of　the　SiZGC　based　anode　exhibits　the　specific　capacity　of　∼650　mA　h　g-1,　which　is　about　three　times　that　of　pure　ZIF　glass　and　about　six　times　that　of　pristine　ZIF　crystal　at　1　A　g-1　after　500　cycles.　The　origin　of　this　huge　enhancement　is　revealed　by　performing　structural　analyses.　The　ZIF　glass　phase　can　not　only　contribute　to　lithium　storage,　but　also　buffer　the　volume　changes　and　prevent　the　aggregation　of　Si　nano　particles　during　lithiation/delithiation　processes.　©　2022　The　Authors