It is important to supplement cod liver oil in children with rickets. There are many kinds of cod liver oil preparations suitable for children, with oil drops or water recommended. Children over the age of one can have a wider range of choices, such as granules or tablets. Because rickets is in fact a deficiency of vitamin D, which promotes calcium absorption, calcium supplementation alone will not achieve the desired effect. Give your child more calcium-rich foods, such as fish, shrimp, kelp, bone broth, etc. At the same time, eat more foods rich in vitamin D, such as animal liver to promote the absorption of calcium. Parents are also advised to take their children outdoors and get more sunlight, around 10 a.m. and 4 p.m., for half an hour each time. The skin can transform the ultraviolet rays of the sun into active vitamin D3, which can promote the absorption of calcium in the body, and all the above ways can help improve rickets.