To provide an adjustable one-touch paper holder whose one body is bisected on the back in the shape of a triangle with a magnet there and the position is stabilized at the time of paper-holding while holding a paper by another magnet.

At the time of holding a paper, etc., by attaching the magnet B of the back to an iron plate, etc., the positioning can be properly made and the paper, etc., can be held by pushing B' with one-touch operation. For releasing the paper, if the held paper is slightly pulled forward, the B' face is opened and B is attracted to the original iron plate. Next time, a paper, etc., can be held just in this situation.