The utility model discloses a prevent wind husky outdoor box, include at least one box and prevent wind sand cover, the box holds in preventing wind sand cover, prevent wind sand cover to fix on the ground, prevent wind sand cover to be provided with cover door and ventilation hole, the ventilation hole sets up in cover door bottom. The utility model discloses a be provided with the outer sand cover that prevent wind of box, prevent effectively that the sand blown by the wind from invading the box in, examine and repair or when safeguarding, operating personnel can get into through the cover door earlier prevent wind sand cover, then closes the cover door even if the box need be opened, later open each box door again and operate, but the entering of effective isolation dust and sand like this, moves normally the internal component safety of guard box to the life of extension relay.