When a child suddenly faints with a convulsion, parents must remain calm and send the child to the hospital or call 120. while waiting for the ambulance, put the child in a quiet, safe and airy place, lay the child flat, undo the child’s clothes, clean the child’s mouth of foreign objects and make the head tilt to the side to avoid blocking the respiratory tract with saliva and vomit, causing asphyxiation. Common causes 1, high fever convulsions: because of the child’s young age, the central nervous system is not yet mature, in a short period of time if the phenomenon of rapid increase in body temperature, will lead to abnormal brain discharge, the symptoms of convulsions and coma, convulsions more than 5 minutes can be given sedative diazepam, and antipyretic acetaminophen; 2, central nervous system infection: when the pathogens through the blood-brain barrier infection brain cells, it will lead to abnormal brain discharge, and then convulsions, fainting and other symptoms. For example, tuberculous encephalitis, viral encephalitis and bacterial encephalitis are all central nervous system infections and usually require cerebrospinal fluid examination to confirm the diagnosis. Tuberculous encephalitis needs to be treated with isoniazid, streptomycin and other drugs; viral encephalitis needs to be treated symptomatically with dexamethasone, mannitol and other drugs, while antiviral drugs such as acyclovir are given; bacterial encephalitis needs to be treated with antibacterial drugs such as penicillin and ampicillin; 3. Epilepsy: seizures can also occur suddenly with fainting and convulsions, usually diagnosed by EEG, and anti-epileptic drugs can be given for Treatment, commonly used drugs such as carbamazepine and phenytoin sodium. It is also important not to forcefully hold the child’s body during convulsions to avoid fractures. After treatment, whether the child regains consciousness or not, he or she needs to go to the hospital for further examination and treatment to avoid delaying the child’s condition and causing more serious consequences.