Aqueous　zinc　metal　batteries　(AZMBs)　caught　significant　attention　because　of　their　simple　manufacturing　processes,　low　cost,　and　excellent　safety　profiles.　However,　the　use　of　liquid　electrolyte　in　AZMBs　would　lead　to　selfcorrosion,　hydrogen　evolution　reaction　caused　by　water　decomposition　and　zinc　dendrite　growth.　These　would　result　in　low　Coulombic　efficiency,　poor　cycling　performance,　and　cell　short-circuiting,　limiting　the　development　of　AZMBs.　Herein,　a　gel　polymer　electrolyte　(GPE)　was　designed　by　introducing　polymers　of　intrinsic　microporosity　(PIMs)　and　subjecting　the　polymer　to　amidoximation　(AO-PIM-1)　using　bacterial　cellulose　(BC)　as　a　support　membrane　to　obtain　the　desired　AO-PIM-1/BC　GPE.　The　C=N　in　the　amidoxime　functional　group　in　the　GPE　coordinates　with　Zn2+　to　promote　ion　transport　and　uniform　deposition　of　Zn.　In　addition,　the　hydrophilic　groups,　-NH2　and　-OH,　reduced　the　energy　required　for　the　desolvation　of　hydrated　Zn2+　inducing　in　a　wide　electrochemical　stability　window　(2.42　V).　Therefore,　the　Zn//Zn　cells　that　incorporate　the　AO-PIM-1/BC　GPE　exhibit　a　cycle　life　of　up　to　similar　to　1100h　and　a　Coulombic　efficiency　of　99.97　%.　Furthermore,　Zn//alpha-MnO2　retains　85　%　of　its　initial　capacity　after　400　charge/discharge　cycles　(0.5C)　and　realizes　a　dendrite-free　Zn　anode.　This　AOPIM-1/BC　GPE　provides　an　effective　strategy　for　protecting　the　Zn　anode　in　AZMBs.