To provide a hair setting tool that is readily portable, and a hair setting method, with which hair setting can be performed in a short time without damaging hair, and curls of various sizes can be easily formed.

The hair setting tool 1 includes hair setting sheet members 2 which is impregnated with a hair treating agent, and fixing members for setting and fixing hair bundles 4 as they are enclosed with the sheet members 2, and rolled. The sheet members 2 are impregnated with the hair treating agent. The hair setting method includes the step of enclosing the hair bundles 4 with the sheet members 2, and the step of rolling the hair bundles enclosed with the sheet members 2, and setting and fixing them in a rolled condition.