First, you can give vitamin D drops, and you should buy regular drugs with the number of "National Medicine Zhunzi", so that the content and safety of active ingredients in regular drugs can be guaranteed.

Second, children can get more sunshine. Ultraviolet B with the wavelength of 290 ~ 3 15 nm in sunlight can penetrate the skin, thus converting 7- dehydrocholesterol in the skin into vitamin D. ..

Third, you can also eat foods containing vitamin D, such as milk, egg yolk, animal liver, fat-rich marine fish, etc., but there is not much vitamin D in food.