An electronic device and a method of controlling a screen display of the electronic device are provided. The method includes displaying, in one screen, a first display area in which a main task is executed and a second display area in which a sub-task is executed; detecting a rotation of the electronic device; determining a direction of a user's face relative to the electronic device; and determining a direction of the display area based on an angle between a direction of the electronic device and the determined direction of the user's face.