Whether a two-year-old and eight-month-old baby needs to take calcium supplements firstly depends on whether the baby has any signs of calcium deficiency, such as poor quality of sleep, night sweats, occipital baldness and so on. If the above symptoms should be supplemented with calcium, you can also go to the hospital to check the trace elements to confirm the diagnosis. Calcium supplements should only be taken under a doctor’s supervision when there is a calcium deficiency in the baby, and should not be taken on your own. Calcium supplementation includes oral medication, such as calcium carbonate granules, calcium gluconate oral solution, etc., but also appropriate sun exposure. Normally, you should also eat more calcium-rich foods, such as milk, meat, fish, soy products, shrimp and other foods, but also more fresh vegetables and fruits, such as spinach, apples and so on, do not be partial, do not picky about food.