The growth retardation of children is not a calcium deficiency: children with growth retardation are not all calcium deficient calcium is essential for children with high growth but it is not simply understood that all children with growth retardation are deficient in calcium let us look at a few examples Case one a hospital had admitted a pair of twin brothers who had reached the age of school development does not reach the level of 2-year-old children parents said to the doctor “My two children are deficient in calcium once we hear what brand of milk powder calcium tablets are good we go to buy to spend money but the child also grows slowly and easy to catch a cold” after the doctor examined the pair of boys with a common congenital heart disease – septal defect after surgery the child recovered Case 2: A 5-year-old male child with growth retardation and low weight was diagnosed with thoracic deformity by the health care provider as “chicken chest calcium deficiency” during a physical examination in kindergarten. Through polysomnography and ENT examination, the doctor found that the child’s adenoids were enlarged, and after surgery, the child’s ventilation improved and his growth spurt began to improve. The parents thought that the calcium deficiency was the cause of the child’s short stature and insisted on the standardized and systematic treatment with growth hormone injections under the guidance of the doctor, and the child grew taller in the second grade and reached the middle level of children of the same age. In fact, as long as the child is ill, it will affect the growth and development to varying degrees in the short or long term, not only caused by calcium deficiency, but also by what causes and how to overcome it.