Abstract: The present inventions belong to the milk industry and can be used for producing pasteurized whole or restored milk and sour milk products on their basis, with a long-term storage time and improved organoleptic characteristics. The inventions provide more careful sterilization of milk and elimination of secondary contamination of products during all production stages thereof. The inventions consist in the method for producing sour milk products consisting in carrying out a milk treatment process and subsequent operations in the presence of soluble in milk derivative of polyphosphoric acid of general formula HO—[PO3X]n—PO3X2, wherein X represents sodium, or potassium, or calcium, or magnesium, or hydrogen or ammonium ions, and 30?n?1 at a quantitative value thereof ranging from 0.4 to 0.7 g/l; the milk treatment is carried out with double pasteurization, bottling and packing are associated with hermetic sealing at a temperature of 68-72° C.