The method of aflotoxins M1 and M2 determination in presence of aflatoxins B1, B2, G1 and G2 is presented. The fluorescence properties of aflatoxin M1 and M2 are discribed. A simple method of aflatoxin M extraction is proposed. Results of different tests for confirmation of aflatoxins M are discussed. During control of powdered milk from three factories aflatoxins M were not detected in final products.