Children’s tossing and turning in their sleep may be caused by physiological or pathological factors. Physiological factors, such as hot and stuffy environment, and pathological factors, such as calcium deficiency, can cause children to toss and turn in their sleep. 1. Physiological factors: If the bedding is too thick and the environment is too stuffy when the child is sleeping, the child may feel uncomfortable and thus toss and turn in his/her sleep; in addition, older children may have dreams, which may cause the child to toss and turn in his/her sleep. 2. Pathological factors: when a child has a calcium deficiency, the nervous system may function abnormally, leading to symptoms of irritability during sleep, and a slight external stimulus may affect the child’s sleep, causing him to toss and turn in his sleep, or even to be woken up and cry. There may be other reasons for children to toss and turn in their sleep, so it is recommended to go to the hospital in time, complete the examination to clarify the cause of the disease, and then give targeted treatment or therapy under the guidance of the doctor.