Heating tube structure for hair curler and hair curler applying same

The heating tube structure comprises a hollow cylindrical tube body, a plurality of heating bodies and an ejecting assembly which ejects the heating bodies on the inner wall of the tube body, the ejecting assembly comprises pressing plates and ejecting blocks, the number of the pressing plates and the number of the ejecting blocks are the same as that of the heating bodies, and the pressing plates and the ejecting blocks are arranged on the inner wall of the tube body. The two faces of the pressing plate are in close fit with the heating body and the ejector blocks respectively, and the multiple ejector blocks are in interference fit with one another. During installation, the ejector blocks, the pressing plate and the heating body are sequentially installed from the two ends of the pipe body respectively, then the ejector blocks are knocked to make the ejector blocks abut against one another, acting force is generated on the heating body, the heating body is tightly attached to the pipe body, and the problems