Fuente: WIPO "dairy products" The invention discloses a method for extracting dicyandiamide from a dairy product, a method for determining dicyandiamide residue quantity of the dairy product and a method for determining dicyandiamide residue quantity of milk powder. The method for extracting dicyandiamide from the dairy product comprises the following steps: the dairy product and water are mixed, the obtained mixture is subjected to first standing treatment, and a first mixed liquid is obtained; the first mixed liquid is mixed with acetic acid, the obtained mixture is subjected to second standing treatment, an obtained second mixed liquid is subjected to first centrifugal treatment, and a supernatant is collected; the supernatant is mixed with acetonitrile, an obtained mixture is subjected to second centrifugal treatment, and an extract is obtained. Therefore, dicyandiamide can be effectively extracted with the method for extracting dicyandiamide from the dairy product, and the dicyandiamide residue quantity is determined accurately with the method for determining dicyandiamide residue quantity of the dairy product.