To allow a worker to easily and surely hold a piping sleeve in a proper position without requiring labor so much.

This sleeve holder has a sleeve holding part for holding the pining sleeve embedded when placing concrete, a fixing part for fixing the sleeve holding part to a reinforcement, and a height adjusting part for adjusting and maintaining an interval between the sleeve holding part and the fixing part. The height adjusting part is composed of an arm rising from the sleeve holding part, and an arm gripping part connected to the fixing part. The interval is adjusted and maintained by friction between the arm and the arm gripping part or fitting of a plurality of uneven parts.