High body temperature in children can easily lead to brain nervous system dysfunction and symptoms such as high fever convulsions and limb cramps. The cramps usually last for about 3-5 minutes, and the cramps should be treated promptly by lying on the side, cleaning the secretions in the mouth in time, and loosening the child’s collar to keep the airway open, and placing chopsticks or a toothbrush between the teeth in the mouth to prevent the child from biting the tongue. You also need to gently press the human middle point, and after the convulsions stop, give antipyretic treatment in time. You can take ibuprofen suspension or acetaminophen, warm water baths and other physical cooling methods to reduce fever. If your child has a tendency to have repeated convulsions, go to the hospital promptly and get an injection of sedative to prevent convulsions. During the illness, pay attention to keep the room air ventilated to help dissipate heat and avoid wearing thick clothing.