The utility model discloses a drying device for cotton yarn dyeing, include the base, install casing on the base, be equipped with the air -blower in the casing, the upper end mid -mounting of casinghas the support column, the support column sets up to hollow structure, the inside blast air cavity that is formed with of support column, the bottom of blast air cavity with the casing is linked together, one side of casing is equipped with the air intake, the both sides of blast air cavity are equipped with a plurality of air outlets, a plurality of drying pole of both sides fixedly connected with of support column, every all be connected with a plurality of the 2nd drying pole on the drying pole, every all be equipped with winding components on the 2nd drying pole, winding components includes that fixed connection is in connecting rod on the 2nd drying pole and with connecting rod fixed connection is and two winding hooks of symmetry setting, the utility model discloses simple structure, convenient operation can prevent that the yarn from overlapping to pile up and lead to appearing musical sound look phenomenon, weathers efficiently.