A hair brush for hot curling includes a body, a closing cap, a connection member and a brush part. The body made of ceramic coated aluminum includes holes through which a steel teeth of the brush part protrudes. The closing cap engages with the body formed by assembling segmented portions. The connection member for connecting the segmented portions of the body includes a body part and an insertion groove to which the body is inserted. The brush part includes a handle part and a fastening part, a first end of which is connected to the handle part and a second end is engaged with one end of the assembled body. An iron core is formed by twisting two or more wires, one end of which is securely engaged within the fastening part, a plurality of the steel teeth being formed on the iron core in a circumferential direction thereof.