To provide a yarn delivering device applicable to the delivery of yarn for avoiding generation of twisting of flat yarn and tape yarn, reducing power and saving energy.

Three of a fixed and supported yarn winding body 1, a rotating guide 2 and a fixed guide 3 are arranged on the same axis, yarn 9 drawn from the yarn winding body 1 is reversed and derived from a center hole 2a of the rotating guide 2 to the fixed guide 3 via a reversing and deriving part 2c, a sensor 5 is installed on a yarn drawing path from at least the yarn winding body 1 to the center hole 2a of the rotating guide 2, the number of revolution around the axis of yarn 9 on the path is monitored and a rotary driving source 4 is controlled so that the rotating guide 2 may be rotated in a direction for returning twisting of yarn 9 by the number of revolution which is the half of the number of revolution of yarn 9 drawn from the yarn winding body l through a control means 7.