One-year-old baby sleeps unsteadily and cries easily, mainly for the following reasons: a. Due to the lack of vitamin D or calcium deficiency, resulting in plant nerve dysfunction caused by the baby, will have sleep unsteadily and cry easily, you can give vitamin D and trace elements of calcium reasonable supplementation, or take the baby to the hospital for a detailed blood test, according to the actual situation to give supplementation, while in daily life The skin synthesizes vitamin D through sunlight, which is one of the most effective ways to absorb vitamin D and is beneficial to the absorption of vitamin D in babies. Second, if the baby is frightened during the day, there will also be sleepless, easy to cry phenomenon occurs, parents can carry out back spine point chiropractic before going to bed, once a day, continuous treatment for about a week, that can be significantly improved.