<p>Provided is a portable wireless device wherein deterioration of antenna performance is eliminated, in the case where the portable wireless device is provided with a sliding mechanism wherein a metal member is used. A sliding unit (150) includes a first sliding member (103) and a second sliding member (104), and the first case (101) and the second case (102) are slidably connected. The first sliding member (103) is in a state of metal plate, and slides with the first case (103). The second sliding member (104) is in a state of metal plate and insulated from the first sliding member (103), and slides with the second case (102) on the first sliding member (103).</p>
