Blade maintenance device for wind turbine

A blade maintenance device for a wind turbine, the blade maintenance device comprising:

• a body that travels along a leading edge of a blade;
• support units comprising support members that extend from the body to both sides of the blade and support the sides of the blade;
• and
• a maintenance unit installed at at least one of the body and the support units so as to perform maintenance of an outer side of the blade,
• wherein the maintenance unit comprises a movement unit that moves along one of the support members, and
• wherein the movement unit comprises:
• a movement member that moves along one of the support members;
• a movement motor installed at the movement member;
• and
• a driving body coupled to a shaft of the movement motor in contact with an outer side of the support member.