It is normal for children to occasionally develop a fever during teething, which usually lasts about 3-5 days and then gradually subsides. Most of the time, children’s teeth erupt naturally and do not feel anything, but there are some children with local redness and fever, which mostly disappear naturally after teething. Fever is also one of the symptoms of teething, no medicine is needed, and it will improve after the teeth come out, and will generally heal itself in about a week. If it does not improve in about 3 days, there may be a secondary infection, which may be caused by a bacterial infection in the gum area. If the local infection of the gums is more serious and symptoms such as abscesses appear, you should promptly consult the pediatrician or stomatologist at the hospital. It is recommended to have routine blood tests and C-reactive protein to understand the specific status of the infection and use the appropriate anti-inflammatory medication according to the test results. When children are teething, they will eat, chew fingers or bite things, which can easily cause fever, diarrhea and other diseases, so they should pay attention to hygiene during this period.