To provide a hair cap which can be simply put on the head and has drying effect increased by improving air circulation.

This hair cap 1 is used for drying wet hair and its water- absorbing cloth is brought face-to-face at its two edges 5, 6 to form a cylinder. Both corners 7, 8 at the top end formed in the circle are integrally fixed with a stopping piece 9 and strings 16, 17 to be tied with each other are attached on both edges 5, 6 near the lowermost end 11.