The invention relates to the technical field of fluid machinery, and discloses a strong-effect filtering type centrifugal fan. The strong-effect filtering type centrifugal fan comprises a volute, an impeller assembly and a motor, the volute is internally provided with an air inlet cavity and an air duct with the inner end communicated with the air inlet cavity, the two ends of the impeller assembly are provided with air guiding covers, a motor positioning ring is arranged on the inner wall of the air inlet cavity, a plurality of connecting strips are arranged on the two sides of the motor positioning ring, the outer ends of the connecting strips are connected with the outer end of the air inlet cavity of the volute through bolts, a connecting ring is arranged on the outer side of the motor, a plurality of connecting lugs are arranged on the connecting ring, and the connecting lugs are connected with the motor positioning ring through bolts; the two ends of the air inlet cavity are provided with activated carbon filtering assemblies, wherein the activated carbon filtering assemblies comprise inner isolation supports and outer isolation supports, the inner sides of the inner isolation supports and the inner sides of the outer isolation supports are provided with activated carbon cloth, and activated carbon particles are used for filling between the two layers of the activated carbon cloth. the device has the advantages that the tail gas of the range hood can be subjected to double filtration, the filtering effect is good, and the overall performance is stable. The strong-effect filtering type centrifugal fan has the beneficial effects that tail gas of a range hood can undergo double filtration, the filtering effect is good, and the overall performance is stable.