To　solve　clogging-related　issues　after　the　long-term　operation　of　a　fungi-based　bio-trickling　filter　(BTF)　which　started　with　Fusarium　oxysporum,　an　in-depth　analysis　on　the　mechanisms　of　four　Delta　P　control　methods,　including　biological,　nutrient　control,　physical　and　stagnation　methods,　were　investigated.　The　biological　control　method　showed　superior　performance　compared　to　other　approaches.　It　reduced　the　Delta　P　from　1000　Pa　to　100　Pa　within　one　week,　and　remained　the　Delta　P　at　this　level　for　two　months,　with　maintained　removal　efficiency　(RE)　of　nearly　100%.　The　average　RE　during　the　high　Delta　P　period　was　88.6%,　and　a　maximum　toluene　elimination　capacity　of　125.4　g　m(-3)　h(-1)　was　achieved　at　an　empty　bed　residence　time　of　27　s.　This　study　is　the　first　comparison　of　these　four　pressure-reducing　techniques　in　a　fungi-based　BTF,　and　obtained　an　effective　biological　control　method,　which　is　of　great　value　for　the　further　industrial　application　of　the　BTFs.