The possible causes of convulsions in children are complex, and many of them are due to some neurological disorders, vitamin D deficiency and febrile diseases. Diseases of the nervous system itself can cause muscle tremors, which is one of the more common causes of convulsions. What is commonly referred to as epilepsy, encephalitis, and meningitis can cause convulsions as a direct result of abnormalities in the nervous system of the brain. The onset of epilepsy in children should not be uncommon, and this is mainly caused by abnormal nerve discharges in the brain, with seizures of varying length and severity. Inflammatory diseases of the brain such as encephalitis and meningitis can also occur as a result of brain damage and cause convulsions, and some other rare brain tumors can cause convulsions to occur due to localized pressure on the nerves. Vitamin D deficiency is one of the most common nutritional metabolic diseases that can cause convulsions in children. Vitamin D deficiency can lead to abnormal metabolism of calcium, phosphorus and other electrolytes in the pediatric body, and electrochemical substance changes at the nerve and muscle junction can occur, causing convulsions. This disease not only causes this problem, but also causes bone abnormalities. In mild cases, emotional irritability can occur, and in severe cases, sequelae of abnormal bone development such as chicken chest, O-leg and X-leg can occur, which need to be given promptly after early onset. Due to the immature development of the nervous system in children, when there is a fever, especially a high fever, it can easily lead to the occurrence of convulsions, which are called a kind of high fever convulsions and are usually not uncommon. This is mainly due to the abnormal conduction of nerves after high fever, which leads to convulsions. Some children, even if their fever temperature is not very high, are prone to this condition, which is a disease that requires emergency medical attention in children. After convulsions occur in children, care must be taken to protect the child from accidental injury during convulsions and give prompt medical assistance.