In order to prevent vitamin D deficiency rickets in newborns, parents will take their children to sunbathe. The specific sunbathing methods include the following: a. The time of sunbathing, if the sunbathing time is too short or too long, will affect the sunbathing effect. If the sun time is too long, it will lead to damage to the child’s skin, especially a long time sun will lead to serious situations such as skin cancer. If the sun time is too short, it cannot achieve the purpose of effective calcium supplement. So if you give your child sunshine, generally half an hour to two hours of sunshine can be; two, sunshine must not be through the glass sunshine, because sunshine needs to be through the sun’s ultraviolet rays, so as to stimulate the synthesis of vitamin D in the skin, effective in further preventing the occurrence of vitamin D deficiency rickets. If you sunbathe through the glass, you can not achieve the effective purpose of calcium supplementation.