Disclosed is a hinge device for a swing-type portable terminal having a first housing, a second housing adapted to be rotated about a hinge axis extending perpendicularly to the front surface of the first housing while facing it, and a hinge device for coupling the second housing to the first housing in such a manner that it can be rotated while facing the latter, including a first hinge cam fixedly coupled to the first housing and exposed to a surface of the first housing, a hinge shaft positioned in the second housing and extending along the hinge axis to be fixedly coupled to the first hinge cam, and a second hinge cam fixedly coupled to the second housing and adapted to reciprocate linearly on the hinge shaft along the hinge axis and to be rotated about the hinge axis while facing the first hinge cam.