Tossing and turning can be caused by environmental factors, indigestion, calcium deficiency, mental factors and so on. 1. Environmental factors: the environment in which the child sleeps may be too noisy or too bright, which will affect the child’s sleep, and may also be due to the sleeping environment temperature is not suitable, such as too high or too low temperature, which will also affect the sleep. 2. Indigestion: If children eat too much, especially too much food before bedtime, food can not be digested in time, stay in the gastrointestinal tract and thus caused by the symptoms, will lead to abdominal pain, bloating, etc., thus affecting sleep. 3. Calcium deficiency: children in the growth and development stage, the blood will lack calcium, which leads to the cerebral cortex is too excited, affecting sleep. 4. Mental factors: children may be mentally stimulated during the day or usually nervous, mostly in students, resulting in tossing and turning, making it difficult to fall asleep. Children tossing and turning difficult to sleep, there may also be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.