The baby sleep unsteadily twisting around, may be related to environmental factors, calcium deficiency factors, fever and cold and other factors. 1. Environmental factors: some babies sleep unsteadily, twisting around, may be related to the indoor environment is too hot and too cold factors, but also does not rule out and the child excessive hunger factors, so it will cause the child to sleep unsteadily. 2. Calcium deficiency: babies in the body of calcium and vitamin D deficiency, may also cause the phenomenon of restless sleep, but also night sweats, night terrors and other manifestations. 3. Fever and cold: the baby sleeps unsteadily and twisting around, also does not exclude and cold caused by the cold and fever related, so the child may be unwell, so sleep unsteadily, twisting around phenomenon. The baby sleep unsteadily twisting and turning, also does not exclude the existence of other reasons may, so need to cooperate with the doctor to improve the examination, clear cause and then do treatment.