Osteoporosis is a common and prevalent disease among the elderly. According to some statistics, nearly one-third of women over the age of 45 suffer from osteoporosis of different severity; while the prevalence of osteoporosis in women over the age of 75 is as high as over 90%. Prevention of osteoporosis should be taken seriously, and calcium supplementation is a must. Osteoporosis brings great inconvenience and pain to patients’ lives, and the treatment is slow and life-threatening in case of fracture, so it is very important to prevent osteoporosis. Starting with children and adolescents, pay attention to proper dietary nutrition and consume more foods with high calcium content, such as fish, shrimp, shrimp, kelp, milk (250ml contains Ca300mg), dairy products, bone broth, eggs, beans, refined grains, sesame, melon seeds, green leafy vegetables, etc. Try to get rid of “risk factors”, adhere to a scientific lifestyle, such as adhere to physical exercise, more sunbathing, do not smoke, do not drink alcohol, less coffee, strong tea and carbonated beverages, less sugar and salt, animal protein should not be too much, late marriage, less childbearing, breastfeeding period should not be too long, as far as possible to preserve calcium in the body, enrich the calcium pool, the bone The peak value of calcium should be increased to the maximum. Scientific calcium supplementation is an important measure to prevent osteoporosis. In addition to the calcium that can be taken from daily food, taking calcium supplements containing vitamin D is a better way to supplement calcium. Because the body has difficulty absorbing calcium from food, and vitamin D is difficult to synthesize on its own. Therefore, liquid calcium capsules, with calcium carbonate as the main ingredient, are inherently easier to absorb and cause minimal stimulation to the gastrointestinal tract. Together with the vitamin D, it helps the body to absorb calcium and has an excellent effect on preventing osteoporosis.