If a child often shows signs such as vomiting, dizziness, unstable walking and abnormal sleeping, he or she should be taken to a hospital in time to detect early brain tumors. Children are young and lack the ability to express themselves correctly, so their performance is often ignored by parents. The incidence and disability rate of brain tumors in adolescents is higher than that of adults, but there is a lack of attention to this problem. Because the brain development of juvenile brain tumor patients is not yet complete, they have relatively high ability to tolerate brain tumor, so their early manifestations are not obvious, and only after a certain degree do they manifest themselves and attract parents’ attention, but at this moment, they often miss the best opportunity for treatment. The factors that cause pediatric brain tumor are congenital and acquired, which require pregnant women to develop healthy habits during pregnancy, such as reasonable diet, insist on outstanding mentality, and stay away from pollution and radiation sources, in order to reduce the chance of congenital disease in children. In addition, improper medication and trauma to the brain during the early years of a child’s life can be a trigger for the development of brain tumors. If a child has frequent headache, dizziness, vomiting, weakness, mental discomfort, enlarged head, unstable walking, slanted eyes or eyes that cannot look upward, parents should take the child to an orthodox hospital for an examination in time to eliminate brain tumors and strive for early detection and treatment.