A hinge apparatus for a portable terminal including a first housing, and a second housing rotatably connected to the first housing, includes a first connection terminal mounted on the first housing; a second connection terminal mounted on the second housing; and a connection member straightly reciprocating between the first and second connection terminals while the second housing rotates with an electric connection with the second connection terminal, wherein the connection member makes contact with the first connection terminal when the second housing is folded to the first housing with facing the first housing, and the connection member also moves in a direction of being spaced apart from and withdrawing from the first connection terminal when the second housing rotates in a direction of withdrawing from the first housing.