To solve the problems that a purchase cost is high, ready-made curtains are overstocked, a stock management system is sensitive, selection has to be made from a few kinds, second paragraph of article 13 of Enforcement Regulations of the Fire Services Act is violated, a height can not be easily changed later, sprinkling of a sprinkler is obstructed, and activation of the entire curtain industry is obstructed since there has been no device for height adjustment for a curtain to be attached around a window or a partitioning curtain to be attached around a bed until now.

By using the device for the height adjustment connected between a curtain hook which is a curtain accessory component and a runner which is a curtain rail accessory component, the curtain height is easily moved.