The invention relates to a long-acting environment-friendly automobile air window glass washing liquid which is a non-toxic environment-friendly automobile air window glass washing liquid which can prevent freezing, prevent fog and remove ice and snow. The washing liquid is formed by stirring and reacting the following components by mass weight: ethanol, ethylene glycol monobutyl ether, alkylphenol polyoxyethylene ether, dodecyl benzyl ammonium chlorine, glycol, glycerol, polyoxyethylene alkyl phenyl ether, sodium benzoate, methyl benzotriazole, sodium molybdate, disodium ethylene diamine tetraacetate, sodium chloride, sunlight-resisting blue, triethanolamine, a defoaming agent and industrial pure water. By using the washing liquid, industrial methanol is prevented from being used as a solvent in the traditional formula; and simultaneously, the washing liquid and ethylene glycol monobutyl ether are matched and used, thereby greatly improving the dissolution effect of a single solvent on blots. The washing liquid disclosed by the invention is prepared by using non-toxic and easily biodegradable raw materials and is environment-friendly, can not pollute environment if being used for a long term, and prevents toxic gases from volatilization to harm a driver in the use process. The washing liquid has the characteristics of preventing fog, removing ice and snow, maintaining no icing on the surface of the glass for a long term, is not burnt and does not corrode.