To provide a book page holder which pinches and fixes the upper and back of the plate surface of a book simultaneously so that the page opened in a book may not be turned over freely.

The book page holder comprises as follows. An upper retaining plate (1) is arranged on one side of the both presser parts of a clip and a concave holder (2) is arranged on the other side thereof. Slip stoppers (3) and (4) for the protection of a book are arranged on the both inside surfaces of the upper retaining plate (1) of the clip and the concave holder (2).