Owing　to　the　potential　safety　hazards　such　as　electrolyte　leakage　and　flammability　of　traditional　lithium　batteries,　nonflammable　all-solid-state　electrolytes　are　considered　to　be　ideal　electrolyte　candidates　for　lithium　batteries.　However,　how　to　effectively　reduce　the　interface　resistance　between　the　solid-state　electrolyte　and　the　electrode　is　the　key　to　the　development　of　all-solid-state　lithium　batteries.　In　this　article,　we　review　the　research　progress　in　surface　modification　of　all-solid-state　lithium　battery　electrodes　and　electrolytes.　The　classic　methods　of　improving　the　interface　contact　and　reducing　the　interface　resistance　are　also　discussed.　Based　on　the　traditional　methods,　new　surface　modification　technologies　will　provide　new　ideas　for　improving　the　performance　of　all-solid-state　lithium　batteries　in　the　future.　©　2021,　Editorial　Department　of　Chem.　J.　Chinese　Universities.　All　right　reserved.