Provided is a method for maintaining good electric conductivity of a heating wire terminal. The end of a heating wire is inserted into a metal tube with good heat conductivity and good electric conductivity, the end of the heating wire and the metal tube are nested, then the metal tube is squeezed through a tool to make tight contact with the heating wire in the metal tube, in this way, the end part of the heating wire is short circuited by the metal tube and does not emit heat, and a certain amount of heat transmitted from the heating part of the heating wire is also absorbed by the metal tube. Due to the fact that the metal tube is good in heat conducting property, large in surface area and high in radiating speed, the nested part of the end of the heating wire and the metal tube is not high in temperature and is not oxidized, good electric conductivity can be maintained, and a power source wire electrically connected with the heating wire is also basically close to the room temperature. Due to the fact that the temperature is not high and oxidization does not occur, good electric conductivity is ensured, the contact resistance at the connecting portion of the end of the heating wire and the power source wire can be ignored, and the damage and the potential hazards of fire disasters caused by heat at the contact resistance position are eliminated. The method for maintaining the good electric conductivity of the heating wire terminal has the advantages that the service life of the heating wire is greatly prolonged, and the reliability and the safety of electric heating products are improved.