Municipal　solid　waste　incineration　(MSWI)　has　become　a　predominant　emission　source　of　polychlorinated　dibenzo-p-dioxins　and　furans　(PCDD/Fs).　Research　focusing　on　the　impact　of　operating　conditions,　environmental　changes,　and　operating　time　on　the　generation　and　emissions　of　PCDD/Fs　has　not　been　resolved.　To　this　end,　this　study　tracked　and　investigated　the　PCDD/Fs　and　17　congener　emissions　of　a　typical　grate　incinerator　(800　t/d)　continuously　for　one　year.　Results　showed　that　the　PCDD/Fs　concentration　at　the　boiler　outlet,　stack　inlet,　and　bag　filter,　including　normal　and　abnormal　operation　conditions,　ranges　from　2.11E-02–41.86　ng　I-TEQ/Nm3,　7.00E-04–6.76　ng　I-TEQ/Nm3,　and　1.12–2.90E+03　ng　I-TEQ/Nm3,　respectively.　The　2,3,4,7,8-P5CDF　has　the　highest　contribution　in　all　samples,　in　which　a　proportion　of　TEQ　ranged　from　30　%　to　77.73　%.　Moreover,　by　applying　the　correlation　analysis　between　PCDD/Fs　and　operating　parameters,　the　emission　characteristic　is　mainly　affected　by　incinerators　and　boilers　during　the　normal　period,　and　it　is　affected　by　the　whole　MSWI　process　under　abnormal　conditions.　In　addition,　the　PCDD/Fs　emission　from　the　MSWI　plant　gradually　increases　from　spring　to　winter.　This　study　is　beneficial　for　supporting　the　control　of　PCDD/Fs　emission　reduction　and　assisting　the　operators　to　optimize　the　relevant　operating　parameters　of　the　MSWI　plant　to　achieve　a　stable　and　up-to-substandard　emissions　during　the　operation　period.　©　2023　Elsevier　B.V.