Protection case for mobile device

A protective case for a mobile device according to an embodiment of the present invention comprises a case body attached to a mobile device; and an external keypad unit installed at the case body and comprising multiple keypads for the use of the mobile device. According to the present invention, a user who has a sight disability or a user who cannot see the mobile device can easily use the mobile device by using the external keypad unit (150) installed at the protective case without using a touch screen of the mobile device.