A coil rack fixing device for fixing a coil rack to a rotor of a winding machine, includes a first member and a second member. The first member is configured for mounting on the rotor. The first member includes a support shaft coaxial to the rotor. The support shaft has a magnetic attracting portion positioned on a free end thereof. The second member includes a body and a magnet. The body defines a through hole thereof. The through hole receives the support shaft. The magnet is received in the through hole and capable of moving along the through hole relative to the magnetic attracting portion.