In a communication terminal in which a first enclosure and a second enclosure are foldable, to provide the communication terminal with an antenna characteristic with a wide band performance in either when the enclosures are opened or folded. In a folding communication terminal comprising an upper enclosure 2 and a lower enclosure 3 which are foldable through a hinge, and an antenna 5 attached to the lower enclosure 3, the antenna 5 is arranged along the edge of the end face 3A on the upper side abutting on the hinge of the lower enclosure 3, a conductor is placed in the upper enclosure 2 not provided with the antenna, and a second printed board 31 is provided so that when the upper enclosure 2 and the lower enclosure 3 are opened, it is connected to the antenna 5 at a high frequency to operate as the antenna, thereby transmitting/receiving an electromagnetic wave.