The straight hair comb has a perm clip shape and a comb shape from the shape, and has PTC and MCH from the heat generation technology. The straight hair comb is a high temperature electronic product for straightening the hair. Mainly through a heating body. The temperature is transmitted to the surface of a metal plate, and the surface temperature is generally set at about 200 degrees. The hair is straightened by this heat. It is suitable for all kinds of curly hair and is currently sold to the United States, Australia, Europe and other countries and regions.