Provided are a method of controlling a power supply of a display unit of a terminal which can automatically restore the power supply of the display unit, and a terminal for performing the method. The method includes shutting off the power supply of the display unit within a preset time when a power supply shut-off event of the display unit occurs, and restoring the power supply of the display unit when a preset restoration condition is satisfied. Accordingly, even in a case in which a predetermined control application installed in the terminal is shut down due to unknown reasons, the power supply of the display unit may be automatically restored when a preset time arrives, thereby preventing the display unit from being continuously shut off.