There is no medical evidence to prove that shortness of breath in 10-year-old children is related to calcium deficiency. Shortness of breath is usually caused by respiratory diseases or heart-related diseases. 1. Pneumonia, bronchitis, bronchial asthma and other common respiratory diseases in children can cause children to breathe poorly, resulting in shortness of breath, shortness of breath and other respiratory symptoms, which may also be accompanied by coughing, fever and other symptoms. 2. Congenital heart disease, myocarditis and other heart-related diseases can also lead to hypoxia, which may be manifested as shortness of breath, cyanosis and so on. Calcium deficiency in children is usually characterized by bone pain, skeletal deformities (e.g., X-shaped legs, O-shaped legs, funnel chest, etc.), and yellowing of hair. Shortness of breath is not usually present.