The present invention relates to the technical field of dairy products, particularly to a yogurt powder for improving sleep quality. The yogurt powder comprises, in parts by weight, 90-100 parts of milk powder, 10-20 parts of whey protein powder, 1-10 parts of phospholipids, 0.05-11.02 parts of a sleep facilitating composition, 1-15 parts of oligosaccharides, 0.1-15 parts of sugar cane juice freeze-dried powder, 0.1-2 parts of lactobacillus powder, 3-8 parts of soluble dietary fibers, 0.003-0.005 part of vitamins, and 0.001-0.003 part of minerals. The sleep facilitating composition comprises 0.01-0.08 part of gamma-aminobutanoic acid, 0.01-5 parts of lotus seed powder, 0.01-5 parts of apple powder, 0.01-0.3 part of a wild jujube extract, 0.001-0.003 part of calcium carbonate, 0.001-0.003 part of magnesium sulfate, and 0.001-0.003 part of zinc oxide. Since the yogurt powder provided by the invention comprises the sleep facilitating components, such as the gamma-aminobutanoic acid, 0.01-5 parts of the lotus seed powder, the apple powder, the wild jujube extract, etc., the yogurt powder can regulate metabolism and improve the brain cell inhibitory function, and has the effects of tranquilizing the mind, facilitating sleep, and alleviating symptoms of neurasthenia, amnesia, insomnia and dreaminess. Consumers can perform fermentation by themselves according to their needs, and the preparation process of the yogurt powder is convenient. The yogurt powder is free of hypnotics, and is safe and reliable, and can be eaten for a long time.