In　this　study,　a　newly　established　bench-scale　thermophilic　continuously　stirred　fluidized　bed　reactor　(CSFBR)　was　applied　for　anaerobic　co-digestion　of　food　waste　(FW)　with　grease　trap　waste　(GTW).　The　performance　of　CSFBR　regarding　stability　and　treatment　efficiency　was　inspected　through　a　laboratory　contrast　experiment　with　two　traditional　continuous　stirred　tank　reactors　(CSTRs).　In　the　OLR　range　of　3.19–7.41　g　COD/L/d,　the　methane　production　rate　of　the　thermophilic　CSFBR　was　about　as　high　as　that　of　the　thermophilic　CSTR.　Nevertheless,　the　thermophilic　CSFBR　had　much　lower　VFAs　(　©　2022　by　the　authors.