1, complementary food, foods containing vitamin D can eat animal liver, egg yolk, fish and so on.

2, supplemented by drugs, drug supplements can be oral vitamin D3, or vitamin AD drops. The most effective way to supplement vitamin D is to bask in the sun every day. Children's skin is directly exposed to ultraviolet rays in the sun every day. If the effective sunshine time is about 2 hours a day, it is the best way to absorb vitamin D. Among all vitamin D supplements, sun exposure has the best effect. It is most beneficial for children to supplement vitamin D through food, medicine and sun exposure.