Taking calcium tablets before bedtime can play a good role in absorption and utilization. Night is the peak of bone tissue metabolism, when the blood calcium concentration is relatively low, relatively speaking, the absorption of calcium will be stronger, so it is possible to take calcium tablets before bedtime, preferably about two hours before bedtime. Take calcium tablets with sunbathing, that is to say, go out in the sun every day, preferably for an hour in the morning and an hour in the afternoon, more conducive to promoting the absorption of calcium. Daily life also need to eat more calcium-containing foods, such as milk, soy milk, eggs, fish and shrimp, onions and some other foods with a good calcium content, and then with eating calcium tablets, comprehensive conditioning, improve the utilization of calcium, increase the strength of the bone.