Disclosed are a system and method for providing online beauty classes through a portable terminal. The online lecture service system includes a beauty instructor information input unit, a beauty instructor register, a beauty instructor fee input unit, a beauty instructor fee register, a call connection unit, and a lecture material providing unit. The beauty instructor information input unit receives preset input beauty instructor information from the communication terminal of the beauty instructor, the beauty instructor registration unit sets and registers the beauty instructor grade using the beauty instructor information, and the beauty instructor fee input unit receives the information from the beauty instructor terminal. The beauty instructor fee is input within the range corresponding to the grade, the beauty instructor fee registration unit registers the entered service price as the hairdressing instructor fee, and the call connection unit makes a call between the hairdressing instructor terminal and the student terminal, and provides lecture materials The department provides different lecture materials that are synchronized with each other in the beauty instructor terminal and the student terminal.
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