Disclosed is a control method of a wearable display device. The control method includes displaying at least one content at a first position on a display unit of the wearable display device, sensing at least one real object located outside of the wearable display device, identifying at least one event object by matching the at least one sensed real object with a predetermined object set, determining a second position on the display unit adjacent to a position on the display unit corresponding to the at least one identified event object and moving a display position of the at least one content from the first position to the determined second position on the display unit.