In　this　research,　we　utilized　potassium　hydroxide　(KOH)　to　re-activate　activated　carbon　and　subsequently　loaded　zinc　oxide　to　obtain　a　more　efficient　catalyst　for　the　decomposition　of　methyl　formate.　The　objective　of　KOH　activation　was　to　augment　the　catalytic　activity　of　the　original　ZnO/AC　catalyst.　Various　techniques　were　used　to　characterize　the　prepared　catalyst　samples,　including　BET,　FT-IR,　SEM,　XRD,　XPS,　and　CO2-TPD.　We　found　that　KOH　re-activation　of　AC　can　increase　the　carrier＇s　specific　surface　area　and　alkaline　sites,　significantly　improving　the　catalyst＇s　performance.　This　study　builds　upon　the　prior　work　of　our　research　group,　aiming　to　develop　a　catalyst　with　enhanced　performance　for　the　decomposition　of　methyl　formate.　In　this　study,　we　utilized　KOH　to　re-activate　the　activated　carbon,　onto　which　we　subsequently　loaded　ZnO.　We　found　that　this　treatment　effectively　improved　the　catalytic　performance　of　the　catalyst.　And　a　series　of　studies　on　structure-activity　relationship　were　carried　out.　image