Calcium stores in the human body are not constant, but are generally highest at the age of 20-30 years, and may change depending on age and dietary intake of calcium elements. Calcium is an indispensable trace element in the growth and development of children, and for children between 0 and 6 months of age, exclusive breast milk and formula are the main sources of calcium supplementation. In particular, with sufficient amount of exclusive breastfeeding, there is no need for special calcium supplementation. With the addition of complementary foods and the addition of calcium-rich foods such as dairy products and soy products, the child’s daily calcium needs can generally be met and there is no need for special calcium supplementation. However, if there is already an obvious calcium deficiency problem, such as the development of bones, brain and teeth and other organs have been affected, it is recommended to seek medical advice in a timely manner and clarify the need for medication for calcium supplementation according to the doctor’s guidance. Common diseases include vitamin D deficiency rickets, vitamin D deficiency tetany, etc. Such diseases may cause disorders of calcium metabolism in the body, thus leading to calcium deficiency. At this time, children may have night sweats, convulsions, convulsions, muscle weakness and other phenomena, and may even develop skeletal deformities, requiring additional calcium supplementation, common calcium supplements include calcium carbonate, calcium gluconate, etc. At the same time, pay attention to vitamin D supplementation to help better absorption of calcium. In addition, the rapid growth of bones during adolescence will increase the need for calcium, and if the intake from the diet is not sufficient, calcium supplementation may also be needed in a timely manner. In addition, some special women in pregnancy, perimenopause, or some people of advanced age, prone to osteoporosis, will suffer from calcium loss due to physiological reasons, and should be supplemented with calcium in a timely manner. Therefore, calcium supplementation does not simply depend on age, but mainly on needs.