The invention provides a filter bag packaging machine fixing device for fixing labels on filter paper. The fixing device comprises a label cutting-off mechanism, an annular mounting frame and a mounting ring located on the inner side of the mounting frame; the inner side of the mounting ring is provided with a rotating shaft in the central axial direction; the rotating shaft is fixedly connected with the inner wall of the mounting ring; the mounting ring and the rotating shaft rotate intermittently in the central axial direction of the rotating shaft jointly; the mounting ring is provided witha plurality of stations at intervals in the circumferential direction; each station is provided with two sliding pins; and the outer side of the mounting ring is further provided with a wire windingassembly, a folding device, a heat sealing assembly I, a slitting cutter assembly and a heat sealing assembly II. The surface lines are subjectedto length determining through intermittent rotation ofthe mounting ring and the wire winding assembly, the production precision of products can be ensured, on the premise of ensuring normal use of consumers, the purposes of saving resources and reducingproduction cost are better achieved, and meanwhile, since cotton threads form small thread loops at joints with the filter paper, the connection strength can be guaranteed.