To enable a curtain rail to be adjusted by sliding without causing curtain rail slip-off from a bracket when the curtain rail is temporarily fixed to the bracket.

A first receiving section 23c of a first bracket 21 receives a first fastening section 11g of the curtain rail 11 at temporary fixation and permanent fixation. A second temporary receiving section 32e of a second bracket 32 receives a second fastening section 11h of the curtain rail at temporary fixation. A second permanent receiving section 32d of the second bracket receives a second fastening section at permanent fixation. An resilient body 24 urges the first bracket to the second bracket in a direction by which the second temporary receiving section and the second permanent receiving section are made to approach the first receiving section. A second temporary receiving section is formed immediately under the second permanent receiving section, and the third fastening section 11i is formed on an upper piece 11a of the curtain rail. Then, a spring body 32h extending from the upper section of the second permanent receiving section to the third fastening section at temporary fixation and allowing a front end thereof to be fastened to the third fastening section for pushing the second fastening section into the second temporary receiving section, is provided integrally with the second bracket.