Abstract: A method for cutting hair which realizes a hairstyle to give a light appearance of movability and vividness by giving natural irregularities to length of the hair. Three different reference lengths are used for one hairstyle. A founding portion of hair is cut by using a shortest reference length, hair of a vector portion is cut by using a middle reference length, and hair of an outer portion that forms an appearance of the hairstyle is cut by using a longest reference length.