To supply a thumbtack striker that drives thumbtacks with a hammer by a simple operation such as pulling a lever, and surely drive a round-head thumbtack by a movable tool or an alignment tool.

The thumbtack striker comprises: an arm provided with a locking piece at its end that descends by pulling a lever provided on the body of the thumbtack striker; a hammer provided with a locking part that locks on the locking piece of the arm; a pushing-out pin provided at the lower part of the hammer head; the movable tool that pushes out forward each of the thumbtacks one by one driven in by the pushing-out pin to position at the lower part of the pushing-out pin; and the alignment tool to align the thumbtacks.