PURPOSE: To provide a spinning bobbin which can not be identified erroneously even under adverse influence by detecting the magnetic signals being obtained by the combined arrangement of amorphous magnetic fine wires.

CONSTITUTION: This is a spinning bobbin in such shape as to hold an identification marker 4 by setting a nearly cylindrical identification marker 4, which has amorphous magnetic fine wires 6, into the head of a bobbin body 1, which has a hollow in the longitudinal direction so that it can be set on a spindle, and attaching a cylindrical slip-out stopping chip 5 into the head of the bobbin body 1.