The invention discloses nutritional powder and cake replacement meal with dietary energy, amino acid constitution and a reasonable food structure for aged people. The basic ingredients comprise the components in parts by weight as follows: 3.3 parts of egg powder, 5.6 parts of whole milk powder, 3.0 parts of fresh oyster, 1.1 parts of chicken liver, 16.0 parts of soybean meal, 10.0 parts of black rice, 8.0 parts of buckwheat, 4.9 parts of oatmeal, 13.7 parts of sweet potato piece, 2.5 parts of Konjac powder, 2.0 parts of liquorice, 2.3 parts of Semen sesami nigrum, 3.0 parts of colleseed oil, 13.6 parts of alfalfa, 3.0 parts of tremella, 10.0 parts of tomato, 2.0 parts of lotus root starch, 1.5 parts of agaric, 1.0 parts of dried kelp, 15.0 parts of honey, 0.2 parts of stevioside and 1.0 parts of fructo-oligosaccharide. In addition, medical and edible food materials are further respectively added: 3.5 parts of fructus lycii, 3.5 parts of dried lily, 3.5 parts of chrysanthemum, 3.5 parts of pericarpium citri reticulatae, 3.5 parts of dried red date, or 3.5 parts of dried hawthorn. With the adoption of the technical scheme, the product can meet the recommended suggestive value with reasonable dietary energy and amino acid constitution put forward by the world health organization and reasonable suggestive value of food structure put forward by Chinese Resident Dietary Guidelines (2007).