The invention relates to a suction filter with a filtrated mud drying device. The suction filter with the filtrated mud drying device comprises a rotating drum, the edge of the rotating drum is provided with a plurality of hot air distribution branch pipes, and each of the hot air distribution branch pipes is connected with a nozzle near one end of the rotating drum; one side of the plurality of hot air distribution branch pipes is provided with a hot air distribution pipe, and the hot air distribution pipe is connected to a plurality of the hot air distribution branch pipes; the suction filter further includes a heater and a blower, wherein an air outlet of the blower is communicated with an air inlet of the heater through a cold air duct; and the air outlet of the heater is in communication with the hot air distribution pipe through a hot air main pipe. Compared with the prior art, the filtration driving force of a filter layer is increased by injecting hot air flow to the filter layer on the rotating drum, and the filter mud is sucked more dry, the sugar content and moisture of the filter mud are reduced, the filtration efficiency of the filter mud is higher, the amount of washing water can be reduced, the evaporation steam consumption is saved, the structure is simple, and the continuous production can be realized.