To get a better effect of calcium supplementation for the elderly: 1. consume some dairy and dairy products, such as plain milk, yogurt and cheese, which contain higher calcium and have a more appropriate calcium-phosphorus ratio and a relatively high absorption rate. 2. increase the intake of beans and soybean products, such as tofu, soybean flower, tofu brain and soybean juice, because the proportion of calcium contained in soybean products is relatively high. 3. 3, to do regular outdoor activities, because the sunlight irradiates the skin of the elderly to synthesize vitamin D3, can promote the absorption rate of calcium from food, but also often can promote the effect of calcium supplementation.