Polymers　of　intrinsic　microporosity　(PIMs)　have　been　widely　used　in　functional　membranes　in　recent　years　because　of　the　inefficient　packing　of　molecules　to　form　stable　structural　micropores.　The　gel　polymer　electrolyte　(GPE)　was　fabricated　with　bacterial　cellulose　(BC)　as　support　membrane　and　the　partially　amidated　PIM-1　(named　as　PIM-CONH2)　as　functional　layer,　which　was　used　as　electrolyte　membrane　in　lithium-metal　batteries　(LMBs).　Due　to　the　existence　of　amide　groups,　the　formed　PIM-CONH2/BC　GPE　exhibited　a　high　Li+　transference　number　(0.76),　good　cycling　performance　(83%　capacity　retention　after　200　cycles　at　0.5C),　and　good　rate　recovery　in　a　LiFePO4|GPE|Li　battery.　The　layered　porous　structure　in　the　PIM-CONH2/BC　GPE　could　adjust　the　Li+　transport　behavior,　and　the　presence　of　an　amide　group　promoted　the　uniform　dissolution/　deposition　of　Li+.　And　the　amidated　PIMs　in　the　GPE　could　play　a　significant　role　in　improving　the　interfacial　affinity　and　suppressing　the　growth　of　lithium　dendrites.　This　work　provides　a　new　strategy　for　improving　the　safety　and　stability　of　LMBs　in　order　to　meet　the　demands　for　functionalized　LMB　electrolytes.