To provide a hair iron which can easily secure close contact in between the cramping plate and the pressing plate upon cramping hair even when the hair iron is without a handle part and in a size to allow almost the whole body to be held by a hand.

This hair iron has a cramping plate (11) pivotally supported rotatable on a shaft body (8) and a pressing plate (21) to press itself against the cramping plate (11) and is in a size to allow a palm to hold almost the whole body. A heat source (12) is equipped on at least one of the cramping plate (11) and the pressing plate (21). The diameter of the shaft hole (17) for a hinge part (18) to form the circumference of the shaft body (8) is formed larger than the diameter of the shaft body (8).