To provide a magnetic holder facilitating reading of a book and enhancing stability and antistaining property when a person reads the book while doing a work with the hands.

For example, a plain-woven rubber 5 is mounted in a folded state on both ends of the surface of an elongated square bar 1. A thin and round rubber 6 is passed through a space defined by the plain-woven rubber to form a ring. A center part corresponding to about one-third of the whole length is bundled into one. A frame into which a magnet is placed is established upright on the backside of the square bar to form a magnet holding space 2. A magnet 3 having a strong magnetic attraction force and easily removable is fixed thereto with an adhesive or pressure-sensitive adhesive tape 4. Two holders as described above are used to clamp pages of a book in the opened state and attached to a refrigerator or a steel rack.