If a 12-year-old child has a definite calcium deficiency, he or she will need to take calcium supplements. If the child is not deficient in calcium, there is no need for medication, and a balanced diet is sufficient. Generally, 12-year-old children are in puberty, and the body’s demand for nutrients will increase. If a 12-year-old child is found to be deficient in calcium, accompanied by symptoms such as hyperreflexia, muscle spasms, tetany, etc., he or she will need to take intravenous and oral calcium supplements as prescribed by the doctor to alleviate the uncomfortable symptoms caused by calcium deficiency. If it is clear that the 12-year-old child is not deficient in calcium or accompanied by symptoms of discomfort, usually do not take calcium supplements, daily intake of sufficient calcium can be. In daily life, 12-year-old children can supplement certain calcium elements from food, such as milk, eggs, soy products, etc., to ensure a balanced intake of nutrients. Pay more attention to outdoor activities, more sunshine and so on. It is recommended that 12-year-old children according to their own actual situation, under the guidance of a physician to eat calcium supplements, not to use drugs on their own, in order to avoid danger.