The purpose of hallucinations is to replace real signals with simulated sensory signals that drive autonomic action. Patients have a dreamlike sensation, as if they were dreaming of a strange sensation, often in conjunction with hallucinations, commonly caused by high fever, epilepsy, temporal tumors, etc. So what are the most important prevention methods for epilepsy that can cause hallucinations? The prevention of epilepsy is very important. Epilepsy prevention involves not only the medical field, but also the whole society. Prevention of epilepsy should focus on three levels: first, prevention of epilepsy by focusing on the cause; second, control of seizures; and third, reduction of the adverse physical, psychological and social effects of epilepsy on the patient. Genetic factors predispose some children to convulsive susceptibility and produce seizures prompted by various environmental factors. In this regard, special emphasis should be placed on the importance of genetic counseling. A detailed genealogical survey should be conducted to find out whether seizures and their characteristics are present in both parents, siblings, and close relatives of the patient, and prenatal diagnosis or neonatal screening should be performed for some serious hereditary diseases that can cause mental retardation and epilepsy to decide on termination of pregnancy or early treatment. For secondary epilepsy, the specific cause should be prevented, and prenatal attention should be paid to maternal health to reduce infections, nutritional deficiencies and diseases of various systems so that the fetus is less adversely affected. The prevention of birth accidents, neonatal birth injuries is one of the important causes of epilepsy, avoiding birth injuries is important to prevent epilepsy. If we can regularly examine pregnant women, implement new methods of delivery, and handle difficult deliveries in a timely manner, we can avoid or reduce neonatal birth injuries. We should pay enough attention to febrile convulsions in infancy, try to avoid convulsions, and control them with drugs immediately. Various diseases of the pediatric central nervous system should be actively prevented and treated in a timely manner to reduce sequelae.