To provide a portable telephone set having an earphone with a microphone in an easily utilizable state.

A fixed member (3) and a movable member (5), freely movable in a direction approaching and leaving the fixed member, are arranged in a portable telephone set (1), and a plurality of pulleys (9) are respectively mounted on the fixed member and the movable member, so as to be freely rotatable; and a code (15) whose top end is provided with an earphone (13) with a microphone is wound around the pulley of the fixed member and the pulley of the movable member, and a control lever (17) is formed at the movable member, so as to be projected to the outside of the portable telephone set, and when the movable member is moved in the direction away from the fixed member by the control lever, the code is pulled into the portable telephone set, and when the code is pulled to the outside of the portable telephone set, the movable member is moved in the direction of approaching the fixed member.