To provide a winding unit of an automatic winder capable of surely capturing a yarn pulled out from a yarn feeding bobbin and introducing it to a yarn splicing part.

The winder unit comprises a first intermediate pipe 25 which sucks, captures the yarn pulled out from the yarn feeding bobbin and introduces it to the splicer device. The winder unit also comprises a center nozzle 81 injecting air toward a suction opening 32 possessed by the first intermediate pipe 25, and a front nozzle 82 injecting air so as to introduce the yarn separated from a suction flow generated in the suction opening 32 or from the injected air of the center nozzle 81 to the suction flow. The winder unit further comprises a back nozzle 83 injecting air toward the suction opening 32 and the back nozzle 83 is arranged near the center nozzle 81.