Compared with the common chrome-nickel heating wire, the A1 heating wire has a longer service life and a higher efficiency of converting electric energy into heat energy. It has been proved by repeated tests that the heating wire can provide a larger amount of smoke under the same resistance. Competition-level electronic cigarette heating wire A1 heating wire, the overall effect of the wire is better than that of the chrome-nickel alloy wire (the color contrast is brighter), and the heat resistance temperature is higher and more stable.