The invention discloses an antifreezing fluid for vehicles, which is prepared from the following raw materials in parts by weight: 11-19 parts of ethylene glycol, 1-5 parts of sodium phosphate, 2-6 parts of sodium chloride, 11-14 parts of sodium benzoate, 1-5 parts of potassium nitrate, 6-16 parts of phenol formaldehyde resin, 5-7 parts of borax, 3-6 parts of sodium molybdate, 4-7 parts of trialkylol amine phosphate, 1-5 parts of methyl tert-butyl ether, 2-8 parts of methyl benzotriazole, 5-9 parts of benzotriazole, 5-9 parts of glycine, 4-8 parts of hydroxypropyl methacrylate, 3-7 parts of methyl silicone oil and 20-40 parts of deionized water. The antifreezing fluid for vehicles has the advantages of reasonable formula, stable effect, high antifreezing property, high antirust property and high scaling resistance.