Children who are generally healthy do not need to choose additional calcium tablets. If it is clear that the body is deficient in calcium, calcium tablets or dietary calcium supplements can be used as prescribed by the doctor. For children who are in good health, have not been examined by a doctor for calcium deficiency, and have bone and joint pain or convulsions, it is usually not necessary for them to take calcium tablets to supplement their bodies with calcium, so as to avoid the counterproductive effects of high blood calcium levels. However, for some children who have been to the doctor’s office for a clear deficiency of calcium, calcium supplements, such as calcium carbonate, calcium gluconate, calcium lactate, etc., can be prescribed by the doctor. It is worth noting that children need to supplement vitamin D to promote calcium absorption on top of calcium supplementation. In addition to drugs, the body of calcium deficiency in children can also be supplemented from calcium-rich foods, such as milk, soy products, fish and shrimp, kelp, lean meat, etc., the effect of food supplementation is relatively limited, parents should also ensure that the child’s balanced intake of nutrients. Parents are advised to choose calcium tablets according to the actual situation of the child and follow the doctor’s instructions, and not to use calcium tablets indiscriminately or adjust the dosage of calcium tablets at will.