Calcium supplementation for adults mainly involves taking calcium tablets orally, or eating calcium-rich foods, exercising and sunbathing, which can make calcium well deposited on the bones. As middle-aged and elderly people, calcium supplementation can slow down the depletion of calcium and can prevent osteoporosis. In daily life, calcium supplementation is mainly limited to the amount per day, too much will cause constipation, and other problems, 2g of calcium per day for supplementation. It is more recommended to take any ordinary calcium tablets orally, which can be used for calcium supplementation, and at the same time, take out a certain amount of time every day for sunbathing, the body surface can synthesize vitamins, which can make calcium deposition to the bones, so as to make the effect of calcium supplementation better. It is not recommended that adults take calcium supplements in the form of intravenous fluids, as this can lead to ectopic deposition of calcium and aggravate vascular sclerosis.