Abstract: The present invention relates to a mobile phone case having detachable cable. More specifically, the mobile phone case having detachable cable allow the users to conveniently carry the USB cable along with the mobile phone by attaching the cable onto the mobile phone cover. The cable is to connect the mobile phone to any external device such as a computer or a battery charger. The mobile phone case having a detachable cable includes a cover to cover the sides of a mobile phone; a cable housing to receive a detachable cable therein; and a cable having a USB connector to be connected to a USB port of an external device, a mobile phone connector to be connected to a port of the mobile phone, and a data cable connecting the two connectors and transmitting data between external devices to the mobile phone.