Sunbathing through glass does not replenish calcium. The principle of calcium supplementation is to irradiate the skin with ultraviolet rays under the sun to promote the synthesis of vitamin D, which can promote the absorption of calcium and achieve the purpose of calcium supplementation. However, ultraviolet rays can not pass through the glass, the skin can not normally receive ultraviolet rays or only receive a small amount of ultraviolet rays, which can not promote the synthesis of vitamin D, so sunbathing through the glass can not supplement calcium. Calcium can be supplemented through a reasonable dietary intake, in which dairy products are the best source of calcium in food, while beans are also rich in calcium, so you need to drink more milk, eat more dairy products and soy products, and more outdoor sunshine. If you have a severe calcium deficiency, you can take calcium supplements according to your doctor’s instructions, which can also replenish your body with calcium in a timely manner, and you can also choose to spend more time outdoors in the sun. It is recommended to sunbathe in the sun to supplement calcium must not be separated from the glass, usually lack of calcium to supplement in time, calcium need to be taken according to the doctor’s advice, do not take on their own.