The invention discloses a bovine colostrum composite powder. The powder comprises the following components in parts by weight: 15-20 parts of soybean protein isolate powder, 3.1-3.8 parts of phospholipid powder, 15-19.21 parts of whey protein concentrate powder, 15.7-18.37 parts of whey protein isolate powder, 1.57-2.15 parts of bovine colostrum powder, 2.81-4.13 parts of marine fish oligopeptidepowder, 6.27-7.92 parts of inulin, 9-11.5 parts of maltodextrin, 9.9-13.2 parts of flaxseed oil microcapsule powder, 8.8-12.65 parts of fructo-oligosaccharide and 0.048-0.072 part of stevioside, wherein the flaxseed oil microcapsule powder comprises flaxseed oil, galactooligosaccharide, modified starch, silicon dioxide, monoglycerol fatty acid ester, diglycerol fatty acid ester and sodium ascorbate. According to the bovine colostrum composite powder disclosed by the invention, the four proteins of the whey protein isolate powder, the whey protein concentrate powder, the marine fish oligopeptide and the soybean protein isolate powder are combined for use, animal and plant proteins have a synergistic effect, various nutrient substances required by a human body can be comprehensively supplemented, the human body is helped to synthesize more immune globulins, and the composite powder directly supplements the immune globulins with the bovine colostrum powder, and helps chronic patients andpostoperative patients to improve the immunocompetence.