Calcium supplements are usually needed around 6 months of age, and parents should take calcium supplements for their babies according to their babies’ actual conditions and medical advice. Usually, during the first 6 months of life, the nutrients in breastmilk can satisfy the needs of babies and will not lead to calcium deficiency or malnutrition, so there is no need to take calcium supplementation measures. After the baby is 6 months old, if medical examination reveals calcium deficiency and symptoms of calcium deficiency, parents can follow the doctor’s advice to give the baby calcium supplements, such as calcium carbonate D3, but parents should avoid blindly supplementing calcium on their own. If you have already added complementary foods, parents need to adjust the diet, so that the baby more intake of calcium-rich foods, such as milk, dairy products. You can also take your baby out for more activities and sunbathing. If the baby has no symptoms of calcium deficiency after 6 months of age, calcium supplementation is usually not needed to prevent the occurrence of diseases such as hypercalcemia. Parents are advised to bring their babies to the doctor for regular medical checkups to monitor their growth and development, and to follow the doctor’s instructions for medication if necessary, rather than using drugs or prescriptions on their own.