The present invention relates to a hinged type sliding door system which can make a plurality of doors aligned on the same line in conjunction with a rail having a uniform structure rotate in an outward/inward direction to be completely open or closed. A hinged type sliding door system of the present invention comprises vertically parallel, spaced-apart rails, and a plurality of doors aligned on the rail to slide along one side, wherein the rail has a dual structure of a preset depth formed at the central region in the longitudinal direction, the dual structure guide groove having a lateral surface being sawtoothed to a preset height so as to form a coupling portion and a lock portion, and wherein the door includes: a moving member provided to the bottom to facilitate the movement of the door on the rail; a binding member having an outer rim in the form of a sprocket, the binding member being insertedly coupled into the coupling portion of the guide groove in the rail to be rotatable with respect to a rotation axis; and a locking member vertically moving to enter or leave from the locking portion of the guide groove in the rail to control deviation from the rail as well as rotation, the door being completely opened or closed by rotating with respect to the rotation axis of the bonding member positioned on one side of the door.