To provide a bag type book cover rich in fashion and topic capable of easily carrying a book when leaving without having anything in hands, and also carrying a paper money, a coin, a magnetic card, an IC card, a small portable music player, a key of a room or the like together with the book while protecting it so as not to be wet in rain or snow.

The bag type book cover characterized by forming a lid 8 and a hanging tool 2 on a book cover to hang it from a waist belt or the like thereby allowing a book to be carried without having anything in hands while protecting it from rain, snow, dirt or the like; and further forming a pocket 4 in a position which is not obstructive when reading the book to allow the paper money, the coin, the magnetic card, the IC card, the small portable music player, the key of the room or the like required when leaving to be carried together with the book.