Babies are young and have a low immune system, so germs can easily cause a cold and fever. During the teething period, if the gums are swollen, inflamed, viral or bacterial infections affect the central thermoregulatory function, they will manifest as fever. The dentist will give the necessary treatment according to the diagnosis, and at the same time, pay attention to drink more water and warm water baths to physically cool down the temperature, the body temperature exceeds 38.5, you can promptly give antipyretic drugs, with anti-inflammatory or antiviral drugs symptomatic support treatment, relieve the gum congestion and redness, drink more water, and slowly return to normal.