The invention discloses a tubular steam heating device and a hair shaper thereof. A tubular steam heating device comprises a heating pipe; the heating pipe comprises an inner pipe and an outer pipe of which both ends are fixedly linked with the inner pipe; the outside of the inner end of the outer pipe is provided with an exhaust linking pipe, and a throttle valve is arranged at the exhaust linking pipe for adjusting temperature; the inner end of the inner pipe extends and protrudes out of the inner end of the outer pipe, and provided with a connecting part; the connecting part is provided with an annular groove; the outer end of the inner pipe or the side wall closing to the outer end is provided with a venting hole. Through a rapid dismounting type connector, the heating pipe is linked with the steam generating device. By adopting the steam heating pipe, the device is convenient to combine with hair, and the temperature is uniform and controllable, safe and free from risk. A comb structure formed by a conical tube is convenient to heat hair in combing hairs. The moveable end cover can adjust the angle of the venting hole and prevent human body from scalding. The connector for linking is convenient to mount and dismount, simple in structure, and good in safety.