To provide a binder type connection notebook in which papers bound in each binder can be opened completely and continuously, and which can be stored compactly when the notebook is closed.

The binder type connection notebook is obtained by: providing at least two binder type notebooks 4 which are formed by fixing a ring type binder 9 to an inside of a back cover 6 of a notebook body 8 wherein covers 5, 5 of both sides and a back covers 6 arranged between them are formed foldably at each boundary line 7; arranging each notebook 4a, 4b right and left in a state of being opened in the lateral direction so that a right longitudinal side 10a of the left notebook 4a and a left longitudinal side 10b of the right notebook 4b come in contact with each other; when a side where the left notebook 4a and the right notebook 4b come in contact with each other is a contact side 10, forming a connection piece 2 extending from the contact side 10 of one notebook to the cover 5a of the other notebook so as to be foldable along the contact side 10; and rotatably connecting the connection piece 2 with a center of a right cover 5a of the other notebook 4a overlapping on the connection piece 2 by a locking shaft 3.