The invention relates to an automobile glass detergent. The invention is characterized in that the automobile glass detergent is prepared by mixing the following raw materials in parts by weight: 2-6 parts of surfactant, 0.5-1 part of water-soluble ionic liquid, 10-20 parts of stabilizer, 60-70 parts of diluter and 0.2-0.5 part of defoaming agent. The chemical formula of the water-soluble ionic liquid is [HBIm][BF4]. The water-soluble ionic liquid used as a lubricant and corrosion inhibition component in the detergent can form a protective film on the windshield wiper surface; and in case of rain, rain water accumulates and slides down on the windshield, and the detergent also has the effect of protecting the glass and wiper. Besides, the detergent can efficiently and quickly remove dust, bird manure and stubborn dirt formed by collision between the animal or insect and windshield on the automobile front windshield and headlamp glass surface.