The three-in-one marcel waver with curling method in the field of hairdressing device is described, including the first hairdressing section, the second hairdressing section and a base. The first hairdressing section is movably connected to the base, and the second hairdressing section is fixedly connected to the base. The second hairdressing section consists of perming unit, combing unit, and switch button, with perming unit and switch button at the inner side, and the combing unit at the outer side. The perming unit links the second hairdressing section thanks to the arc-shaped transitional edges designed laterally. The combing unit comprises the first comb, the second comb, holder, the second comb hole, and the first comb hole. The holder has the second comb hole and the first comb hole. The invention features the integrated design of splint, electric comb and hair curler, meeting the needs of various hairstyles of terminal customers, and providing better user experience by catering to consumer demand.