The invention relates to meal replacement powder for maintaining beauty and keeping young. The meal replacement powder is characterized by being prepared from the following raw materials in parts by weight: 8-18 parts of freshwater mussel meat powder, 15-35 parts of ferment powder, 5-15 of pearl powder, 2-12 of rose powder, 2-8 of almond powder, 2-8 of aloe powder, 2-5 of carotene, 2-5 of natural vitamin C, 2-5 of a natural vitamin E and 1-4 parts of green tea polyphenols. The meal replacement powder disclosed by the invention is produced by using freshwater mussel meat as main raw materials, is rich in nutrient substances of protein, an amino acid, mineral substances and the like, is easy to absorb by a human body, and has the efficacies of clearing heat, removing toxicity, improving eyesight and nourishing yin; besides, auxiliary materials, such as the ferment powder, the pearl powder, the rose powder, the almond powder, the aloe powder, the carotene, the natural vitamin C, the natural vitamin E and the green tea polyphenols are added, so that dietary fibers are increased, besides, the quantity of heat is low, the satiety is strong, and the meal replacement powder can have the effects of maintaining beauty, keeping young, resisting oxidation and resisting radiation.