Sleeping with shaking head may be caused by mental stress, calcium deficiency, abnormal sleep and so on. 1. Mental stress: recent excessive mental stress and poor sleep quality may also cause shaking head and brain. 2. Calcium deficiency: Most common in infants and young children, the lack of calcium in the body can also lead to shaking head and brain in sleep, because calcium can promote the growth and development of bones. If the calcium content in the body is insufficient, it will easily affect the growth of bones, resulting in physical discomfort, affecting sleep and shaking head and brain. 3. Abnormal sleep: In cases such as sleep apnea and REM sleep behavior disorder, abnormal states can occur during sleep, such as shouting, crying, running, etc., which can also be accompanied by symptoms of head shaking. Lead to sleep shaking head can also be caused by other reasons, it is recommended that the patient should go to the regular hospital neurology department in a timely manner, to clarify the cause of the disease, under the guidance of a professional doctor to take targeted treatment.