Modified milk powder capable of enhancing immunity and preparation method thereof

The invention belongs to the field of dairy products, and particularly relates to modified milk powder capable of enhancing immunity and a preparation method thereof. The modified milk powder comprises the following raw materials in parts by weight: 300-400 parts of lactose, 200-300 parts of bovine colostrum powder, 150-400 parts of desalted whey powder, 50-100 parts of composite vegetable oil, 80-100 parts of dietary fibers, 100-150 parts of erythritol, 8-15 parts of sambucus williamsii fruit powder, 5-10 parts of acerola cherry powder, 1-3 parts of lactoferrin, 0.5-1 part of phospholipid, 1-2 parts of L-sodium ascorbate, 0.1-0.5 part of bifidobacterium animalis Bb-12, 0.05-0.2 part of N-acetylneuraminic acid, 0.5-1 part of yeast beta-glucan and 0.01-0.05 part of bifidobacterium lactis HN-019. The plant extract and the L-sodium ascorbate are compounded on the basis of the raw milk powder, so that the effect of enhancing cellular immunity is achieved; and the yeast beta-glucan, the bovine colostrum powder and