Abstract: A portable device providing a speech-synthesizing interface is provided. The portable device includes a portable main unit being inputted thereinto, storing and processing one of a text data and a music, transmitting a human voice data, receiving a command for one of the text data and the music, and at least includes a speech-synthesizing module converting the text data into the human voice data; and a wireless communication module connected with the speech-synthesizing module, wirelessly receiving the command and wirelessly transmitting one of the human voice data and the music; and at least one wireless headset wirelessly transmitting the command to the portable main unit and receiving and playing one of the human voice data and the music transmitted from the wireless communication module of the portable main unit within an effective receiving and transmitting range.