PURPOSE: To obtain a yarn-feeding system to a creel for automatically and efficiently feeding a package to the creel of a knitting machine.

CONSTITUTION: This system for feeding yarn to creel is constituted of a creel device in which a pair of creels 24 providing many pegs 21 fitting packages P thereto in rows is put side by side and simultaneously yarn ends of a pair of mutually adjacent packages are coupled to each other, devices 1, 3, 4, 23, 5, 6, 7, 33 and 25 for carrying package-fitted creel cassettes to the creel device and a device 11 for carrying empty creel cassette obtained in the creel device and then removing empty pipes. Thereby, the package can automatically and effectively be fed to the creel.