The invention discloses a corrosion-prevention thin film electromagnetic wire. A surface of an alloy copper wire is covered with an insulation layer by employing a sol deposition mode after the alloycopper wire is processed in the corrosion-prevention thin film electromagnetic wire. In the corrosion-prevention thin film electromagnetic wire, texanol is used as a film formation additive and is mixed with phosphate, silicate and sulfate, and the rust prevention and corrosion resistant performance of the alloy can be effectively improved; the added calcium acetylacetonate and stearic acid are mixed and coated on a surface of the alloy in film formation mode, and the effects of thermal resistance and corrosion prevention are achieved; and in the corrosion-prevention thin film electromagneticwire, aluminum isopropoxide is used as a precursor, is hydrolyzed in an alkali solution and deposited on the surface of the alloy, the sol-coated alloy electromagnetic wire is achieved by sintering, and a good protection effect of the alloy is achieved.