Teething fever is very common in children, and a temperature of 39.5°C usually does not last long. After careful care, the temperature will gradually return to normal in 2-3 days. If the temperature remains at 39.5°C after 3 days, you need to consult a pediatrician for an examination. Teething fever in children is triggered by a wound inflammation of the gums caused by the milk teeth breaking through the gums. Most children have a fever below 40°C that lasts for about 3 days, when the inflammation is relieved and the body temperature returns to normal. During this period, parents must pay attention to their children’s oral hygiene, clean their mouths with a finger cushion dipped in light salt water, use a teething stick reasonably, and actively disinfect the teething stick to avoid aggravation of gum inflammation. If the body temperature does not return to normal after 3 days, it proves that the inflammation is more serious, and the child should be promptly seen by the pediatrician in the hospital to avoid hiding other diseases. During the visit, you should inform the doctor in detail about the fact that your child is teething, which will help him/her to make an accurate judgment.