1. A method for recording and playing a user voice in a mobile terminal, the method comprising: entering a page by executing an electronic book; identifying, by the mobile terminal, whether a first user voice record file related to the page exists; generating the first user voice record file related to the page by recording a text included in the page to a user voice if the first user voice record file does not exist; playing the user voice by synchronizing the user voice stored in the first user voice record file with the text if the first user voice record file exists; generating a phonemic voice file by classifying the user voice stored in the first user voice record file by phoneme; comparing the phonemic voice file with all the text included in the electronic book; and generating a second user voice record file related to remaining pages without a stored user voice record file if a percentage of the phonemic voice file for all the text is higher than a predetermined level, wherein if a required phoneme is not stored in a Text To Speech (TTS) database, then informing a user by a suggestion to record phoneme.