One year old baby sleep tossing and turning at night may be physiological factors, may also be the manifestation of certain diseases, such as calcium deficiency, parasites and other pathological factors. 1. Physiological factors: if the one-year-old baby has been in the playful play before going to bed, resulting in a high degree of brain excitation before bedtime, it will often be difficult to fall asleep, even after falling asleep will also be the case of tossing and turning. 2. Pathological factors: (1) Calcium deficiency: one and a half year old baby is in the stage of rapid growth of the body, the demand for calcium is greater, but the dietary structure is unreasonable, calcium intake is insufficient or the lack of vitamin D in the body affects the absorption of calcium, resulting in a decrease in blood calcium, brain excitability increases, and often sleep at night, such as tossing and turning performance. (2) parasitic diseases: not wash hands before meals and after meals, often with dirty hands to take things to eat, can be infected with parasitic diseases, such as pinworms, pinworms outside the anus at night when you sleep, resulting in anal itching, which can lead to more than one year old babies at night sleep tossing and turning symptoms. In addition to the above factors, it cannot be ruled out that it is caused by other factors. It is recommended that patients go to the hospital as soon as possible for examination by the doctor to clarify the cause of the disease, and then give targeted treatment.