Teaching aid for hair cutting

Disclosed is especially a hairdressing teaching aid whose cheek and brainpan (the brainpan includes a vertex and a back occipital) can be mutually assembled to make up heads of different plumpness. The hairdressing teaching aid includes hair, the cheek, the brainpan and ears. The cheek and the brainpan are respectively provided with convex areas or concave holes. The cheek is also provided with holes for inserting ears in which the ears are inserted. The brainpan is provided with a device for lapping hair. The side of the hair is provided with a corresponding lapping device. The lower side of the cheek and the brainpan is provided with a base. The cheek is provided with different face types, such as fat face type, thin face type, square face type, round face type, long face type and short face type. The ears are made of flexible material. The cheek is provided with different plumpness, which has positive meanings in enhancing teaching quality. Additionally, the ears are made of flexible material, which is convenient for one to press the ears when he learns how to trim hair. As the hair can be repeatedly used, waste is avoided.