To provide a device for treating fly textile waste, capable of decreasing load of operator through making the fly textile waste easily treatable.

This device comprises a fly textile waste-gathering chamber 3 having a fly textile waste collecting filter 2, a collecting room 4 adjoining the fly textile waste-gathering chamber 3, a collecting means 5 for gathering fly textile waste collected on the filter 2 of the chamber 3 into the room 4, an outlet 15 for purging the fly textile waste out of the device, an extruding device 16 for extruding the fly textile waste in the room 4 to the outlet 15 and a driving means 17 for driving the extruding device 16. The fly textile waste in the room 4 can be compressingly extruded to the outlet 15 by the device 16 without manpower.