The present disclosure relates to a wearable display device. According to an exemplary embodiment, the wearable display device includes: a display unit configured to display an image； a wearing means configured to fix the display unit on a body part； a plurality of sensors positioned on one surface of the wearing means and configured to contact a measuring target to measure a bio-signal from the measuring target； and a wearing means adjustment section included in the display unit and configured to adjust a length of the wearing means contacting the measuring target of the wearing means by using the bio-signal.
