The utility model provides a setting element for spinning frame cradle, including a locating pin and a spacing iron wire, the locating pin comprises round bar and head, the head is greater than the vertical section of round bar, a through -hole is seted up to the end of round bar, the length of round bar is greater than the width of cradle seat, the round bar passes cradle seat and rocking arm, and expose terminal through -hole, after the spacing iron wire fifty percent discount pass two afterbodys the through -hole, and the kink of spacing iron wire is located the one end of through -hole, two afterbodys are located the other end of through -hole, form a contained angle between two afterbodys, the contained angle is less than 180 degrees and just is greater than 30 degrees. The utility model discloses though simple structure, the stability of roller pressure has been guaranteed to its not hard up roll -off problem of thoroughly having solved the locating pin to guarantee product quality's stability, improved production efficiency.