The paper takes common food materials that contain 5 nutrients of calcium, phosphorus, potassium, sodium and magnesium in the Chinese Dietary Reference Intakes (2013) as authoritative reference data, combines the data of finished dishes obtained from the Internet, and calculates the data by making use of the search engine, database storage and other computer technologies, in order to obtain the list of finished dishes containing certain nutrients, achieve the calculation from nutrients to finished dishes, and provide solutions to the guidance for targeted nutrient supplement diet of residents.