Composite protein powder capsule and preparation method thereof

The invention discloses a composite protein powder capsule and a preparation method thereof. The composite protein powder capsule comprises composite protein powder and a capsule shell, raw materials of the composite protein powder include, in weight percent, 5-20% of lactoferrin, 60-90% of whey protein and 5-20% of starch, the capsule shell is an enteric capsule shell, and the composite protein powder capsule can be formed by mixing various raw materials and filling the raw materials in the capsule shell. The preparation method is simple, and compared with a like product, the prepared composite protein powder capsule has the advantages that digestive absorption is facilitated, intestinal irritation is less, the composite protein powder capsule is rich in eight types of amino acid necessary for a human body, humoral immunity and cellular immunity can be promoted, and an immune system of the human body is enhanced. Besides, the composite protein powder capsule is effective in treatment of iron deficiency and iron-deficiency anemia.