A　boron　and　iron　co-doped　biochar　(B-Fe/biochar)　from　Masson　pine　bark　was　fabricated　and　used　to　activate　peroxydisulfate　(PDS)　for　the　degradation　of　guaiacol　(GL).　The　roles　of　the　dopants　and　the　contribution　of　the　radical　and　non-radical　oxidations　were　investigated.　The　results　showed　that　the　doping　of　boron　and　iron　significantly　improved　the　catalytic　activity　of　the　biochar　catalyst　with　a　GL　removal　efficiency　of　98.30%　within　30　min.　The　degradation　of　the　GL　mainly　occurred　through　the　generation　of　hydroxyl　radicals　(·OHs)　and　electron　transfer　on　the　biochar　surface,　and　a　non-radical　degradation　pathway　dominated　by　direct　electron　transfer　was　proposed.　Recycling　the　B-Fe/biochar　showed　low　metal　leaching　from　the　catalyst　and　satisfactory　long-term　stability　and　reusability,　providing　potential　insights　into　the　use　of　metal　and　non-metal　co-doped　biochar　catalysts　for　PDS　activation.　©　2023　by　the　authors.