The　development　of　lithium-metal　batteries　(LMBs)　is　seriously　restricted　by　the　out-of-control　dendrites　growth　and　infinite　volume　expansion.　Herein,　a　pervasive　organic-inorganic　layer　construction　strategy　is　reported　for　the　composite　lithium　metal　anode　with　congener-derived　organic-inorganic　solid　electrolyte　interphase　(SEI).　In　this　strategy,　the　organic-inorganic　Ag@polydopamine　(Ag@PDA)　layer　is　coated　on　the　arbitrary　substrates　by　a　simple　two-step　method.　The　thin　and　stable　congener-derived　SEI　is　insitu　formed　with　fewer　inorganic　components　and　more　organic　components　during　charging/discharging.　The　polydopamine　with　sufficient　adhesion　groups　and　lithiophilic　Ag　layer　realize　near-zero　nucleation　overpotential　during　lithium　deposition.　The　low　interface　resistance　and　stable　lithium　deposition　are　achieved.　Moreover,　the　practical　areal　and　volumetric　capacities　of　the　composite　anode　with　threedimensional　copper　(3DCu)　as　the　substrate　are　10　mAh/cm2　and　1538　mAh/cm3　(　vs.　the　mass　of　anode).　The　symmetrical　cell　shows　very　low　polarization　voltage　(10　mV)　and　more　than　2500　h　cycles　life　at　1　mA/cm2　(1　mAh/cm2　).　The　LiNi0.8　Co0.1　Mn0.1　O2　(NCM811)-based　full　cells　show　improved　capacity　retention　(82%)　after　100　cycles　at　0.5　C.　The　modified　lithiophilic　anode　with　congener-derived　interphase　provides　a　promising　strategy　to　realize　the　next-generation　dendrite-free　LMBs.　(c)　2024　Published　by　Elsevier　B.V.　on　behalf　of　Chinese　Chemical　Society　and　Institute　of　Materia　Medica,　Chinese　Academy　of　Medical　Sciences.