Calcium carbonate D3 granule composition for infants and preparation method of calcium carbonate D3 granule composition

The invention provides a calcium carbonate D3 granule composition for infants and a preparation method of the calcium carbonate D3 granule composition. The preparation method comprises the following steps: (1) screening raw and auxiliary materials by adopting an 80-mesh sieve for later use; (2) placing calcium carbonate, maltodextrin and glucose in a mixing machine for mixing for 30min, and carrying out stirring while adding an adhesive, namely, 50% alcohol, thus preparing a soft material; (3) placing the soft material into an oscillating granulator, and carrying out granulation by adopting a16-mesh stainless steel sieve; (4) placing the wet granules in a blasting drying oven at 50-65 DEG C for drying till the water content does not exceed 5.0%, carrying out standing for cooling, and carrying out size stabilization by adopting a 30-mesh stainless steel sieve, thus obtaining calcium carbonate granules; and (5) uniformly mixing vitamin D3 powder with the calcium carbonate granules by adopting a method of increm