The invention discloses a composite enzymolysis process for cubilose, and relates to the technical field of cubilose processing. The process comprises the following steps: 1 drying cubilose with hot air, crushing, sieving, adding water which is 25 times of dry weight of the cubilose, and soaking for 4 hours; 2 under a mechanical stirring condition, controlling the temperature to be 95-99 DEG C and carrying out heat preservation for 60 minutes; 3 cooling to 50-60 DEG C, adding 0.3% of animal hydrolytic enzyme, 0.3% of neutral protease and 0.15% of flavor enzyme on the basis of the dry weight of the cubilose, naturally adjusting the pH value, and carrying out enzymolysis for 6 hours; 4 heating to 85-90 DEG C again, keeping for 20-30 minutes, and carrying out enzyme inactivation; and 5 filtering and removing insoluble impurities, and carrying out vacuum concentration or spray or freeze drying. The composite enzymolysis process is simple; the yield is about 80%; the characteristic index, namely sialic acid content of the cubilose is 10.5%; the biological activity is reserved; the total bacterial count is 460cfu / g, and accords with the hygienic requirements of food and cosmetics; and the cubilose is good in water solubility, has a protein fragrance, and is free of a bitter taste.