The vitamin that can be used to combat rickets is vitamin D. Rickets is most commonly caused by vitamin D deficiency and is mainly seen in infants and young children up to the age of 2. Vitamin D deficiency in infants and young children leads to abnormal calcium and phosphorus metabolism, which eventually leads to malformation and softening of bone development. Early symptoms of rickets are not obvious, the child may have irritability, excessive sweating, wake up from sleep at night, etc. As the disease worsens, followed by cranial softening, square skull, chicken chest and other skeletal transformations. Treatment should mainly focus on the intake of vitamin D, the child should adhere to outdoor activities, to ensure that a certain amount of time the sunshine time, timely addition of complementary foods, if the treatment is timely, the vast majority of will recover well, if not may cause permanent skeletal deformities. If parents find that their children have rickets suspected symptoms, they should consult the doctor as soon as possible, improve the relevant examinations to clarify the diagnosis, so as not to delay treatment.