Rickets is a metabolic disease caused by a deficiency in vitamin D, and its clinical manifestations primarily include symptoms in infants such as a square skull, night sweats, pigeon chest, eversion of the rib cage, as well as bowlegs or knock-knees. Severe cases can lead to skeletal deformities in the chest and developmental disorders. Therefore, for the treatment of children with rickets, it is necessary to intake vitamin D and calcium to promote bone development. Swimming is also a form of exercise that can enhance the absorption of calcium by the bones, which can help prevent the progression of rickets. It is also important to engage in outdoor activities and expose to sunlight, as vitamin D can be synthesized through sun exposure, effectively supplementing it. If a child's symptoms of rickets are relatively severe, it is advisable to take the child to a specialist hospital for a 25-hydroxy vitamin D test and supplement vitamin D based on the specific results.