Two-year-old baby if there is no calcium deficiency symptoms, do not need additional calcium supplement, such as the existence of calcium deficiency, can be alleviated through sun exposure, dietary adjustments, medication supplementation and other ways. 1. sunbathing: for two-year-old babies, you can sunbathe more, the sun’s ultraviolet rays, can promote the synthesis of vitamin D in the skin, which in turn promotes the absorption of calcium, help to correct the symptoms of calcium deficiency in babies, but need to pay attention to not exposure to sunlight, need to be moderately irradiated by the sun. 2. Dietary adjustments: two-year-old baby can also eat calcium-rich foods for calcium supplementation, such as milk, meat products, etc., so as to effectively supplement the body protein and calcium components, can improve the baby’s calcium deficiency phenomenon. 3. drug supplement: two-year-old baby if the symptoms of calcium deficiency is serious, you can also cooperate with the doctor by taking calcium gluconate, vitamin D and other drugs, so as to achieve the purpose of calcium supplementation and promotion of calcium absorption, to alleviate the symptoms of calcium deficiency. Children with calcium deficiency need to consult a doctor for a clear diagnosis, and follow the doctor’s instructions for targeted treatment. The above medication should be used under the guidance of a doctor, avoid self-medication to avoid adverse effects.