Abstract: A door lock device including a housing coupled to a predetermined portion of the door and having first penetrating holes formed in centers of both lateral sides, respectively, corresponding to front and rear surfaces of the door. A second penetrating hole formed in a wall of the housing. A body unit in the first penetrating hole to reciprocate forward and backward. A hinge traverse a longitudinal center of the body unit. A third penetrating hole is formed in a center of a bottom surface of the body unit. A door lock unit in the housing and body unit. Triangle-shaped holes are formed in both walls of the door lock unit. The door lock unit operating a latch for fixing the door while reciprocated the second penetrating hole and the third penetrating hole by the hinge along the reciprocating movement of the body unit.