Fever convulsions are usually caused by high fever. When the body temperature reaches a certain height, patients can have convulsions, especially in children, which is a kind of stress reaction of the organism. In addition, some diseases with febrile manifestations can also cause convulsions themselves, such as encephalitis meningitis, tumor-occupying lesions in the brain, etc. In pediatrics, patients with febrile convulsions are more frequently encountered. As the brain of children is not yet well developed, coupled with viral and bacterial infections, it leads to cortical dysfunction and abnormal discharge, which is more likely to cause convulsions. There are also complex febrile convulsions such as brain infections like meningitis and hemorrhagic or tumor lesions of the brain, often accompanied by neck tonicity, high fever and jet vomiting. In adults, stress reactions, such as generalized chills, tremors, and involuntary muscle activity, occur when an allergen from an infectious disease acts on the body, and are commonly associated with acute pneumonia, lung abscess, or acute upper respiratory tract infection. Fever convulsions are also seen in patients with epilepsy, but there is generally a family history of recurrent convulsions, which are generally easier to diagnose based on medical history. In conclusion, if a patient has a febrile convulsion, he or she should immediately go to the hospital for examination and treatment by a professional doctor after the cause is clear. In the event of convulsions in children, parents should remain calm and pay attention to flattening the child and holding a side-lying position to avoid airway blockage by respiratory secretions.