Two-year-old babies need to supplement the following substances: 1, need for calcium, iron, zinc and other trace elements to supplement, in favor of the healthy growth of the baby. Calcium can be oral calcium gluconate oral solution or calcium carbonate granules; zinc can be oral zinc gluconate oral solution; iron can be applied to ferrous sulfate oral solution, at the same time with vitamin C common oral, conducive to the absorption of iron. 2, vitamin D supplementation, vitamin D is conducive to the growth of babies, and is conducive to the absorption of calcium, you can daily appropriate sunshine sunlight, which is the most effective way of vitamin D absorption. This is the most effective way of vitamin D absorption. At the same time, you can take vitamin D orally, regular amount of supplementation, is conducive to bone development. 3, finally, you can give the baby appropriate oral lysine Vitamin B12 oral solution, etc., is conducive to the absorption of nutrients, at the same time, is conducive to the baby’s healthy growth.