PURPOSE: To provide a remaining thread removing device of a bobbin thread bobbin capable of surely clamping the winding end part of remaining thread and surely winding all the remaining thread to a take-up pulley.

CONSTITUTION: This device is provided with a rotary pulley 10, the take-up pulley 11 attachably and detachably and rotatably provided coaxially to the rotary pulley 10 and a hook 12 for hooking a part of the remaining thread S stretched between a bobbin thread bobbin 1 and a bobbin thread bobbin case 2 and drawing it to both pulleys 10 and 11. The hook 12 is constituted so as to position the remaining thread S stretched between the hook 12 and the bobbin thread bobbin 1 between the end face 10b of the rotary pulley 10 and the end face 11b of the take-up pulley 11 at the time of drawing a part of the remaining thread to both pulleys by the hook 12. Then, by holding the remaining thread there between and clamping it by the end faces 10b and 11b of both pulleys, the take-up pulley 11 is not idly rotated and the remaining thread is surely wound by the take-up pulley 11.