The invention discloses composite granules. The formula of the composite granules comprises the following main ingredients in parts by weight: 1-3 parts of ginseng, 1-3 parts of bighead atractylodes rhizome, 2-4 parts of poria cocos, 0.5-0.8 part of honey-fried licorice roots, 1-3 parts of composite powder, 30-40 parts of royal jelly, 3-5 parts of pueraria lobata, 1-2 parts of dandelion, 1-2 partsof schisandra chinensis, 0.5-0.8 part of astragalus membranaceus, 5-7 parts of composite sugar, 0.2-0.4 part of Chinese wolfberry, 2-3 parts of polygonum multiflorum, 2-3 parts of liquorice, 1-2 parts of astragalus membranaceus, and 1-2 parts of dried ginger. A preparation method of the composite granules comprises the following steps of: S1, taking materials; S2, frying the materials; S3, grinding; S4, performing premixing; S5, starting a liquid spraying air pump to provide a material mixing medium; S6, drying the granules; S7, performing granule selection; S8, performing inner packaging; and S9, performing outer packaging. In the granulation process, a grinding function is added; ginseng, poria cocos, honey-fried licorice roots, pueraria lobata, dandelions, compound sugar, polygonum multiflorum, liquorice, astragalus membranaceus, dried ginger, Chinese yams, radix bupleuri, cortex lycii radicis and folic acid tablets are sequentially poured into a grinding machine to be ground and mixed; the particle fineness is improved; and the particle forming effect is provided.