To provide a bookmark that is detachable when needed such as accessing to books, referencing a plurality of parts, and temporarily half-finished reading.

The hanging type bookmark adopts a system to fix the body to the book at the part hanging on the cover and the back cover of the book. So there is provided the bookmark that has effective functions the same as mounted in bookbinding, though it is detachable, that does not disturb the book inspection. Especially, when needed to refer to several places such as investigation and learning, the hanging type bookmark can provide the one that the bookmark number is increased according to the status and is effective.