To provide a method of locking a film tail end to the shaft part of a spool where the film tail end is locked without using any adhesive tape and removing the film tail end in such a state that the spool can be reused.

In the method of removing the film tail end locked to the spool which has a slit where the film tail end can be inserted in a through shape at the center part of the shaft part of the spool and also has a lock claw where a lock hole that the film tail end has is locked on one internal wall surface of the slit and a film press rib on the other internal wall surface, a thin-plate type member is inserted below the film tail end from the rear part of the slit and the film tail end is pulled out while clamped by a clamp member which deforms the film tail end in a concave shape while the thin-plate type member is inserted.