A child sleepwalking up at night may be related to mental stress, genetic factors, immature brain development, and psychiatric diseases. 1. Mental stress: children with excessive study pressure, high mental tension, long time in a state of tension and anxiety, and lack of sleep, will lead to the occurrence of sleepwalking. 2. Genetic factors: if parents have experienced sleepwalking, due to genetic reasons, the child will also experience sleepwalking symptoms. 3. Immature brain development: the immature development of nerve reflexes leads to sleepwalking symptoms, which can gradually disappear as the child grows older. 4. Mental illness: Craniocerebral trauma or encephalitis, epilepsy and other diseases can also lead to sleepwalking symptoms. Children sleepwalking at night, there may be other reasons, it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, give targeted treatment or treatment.