Teething in infants does not usually lead to fever directly, so there is no such thing as how many degrees of fever, if secondary infection, according to the degree of infection and immunity to different degrees of fever. Infant teething is a normal physiological phenomenon, usually does not affect the health, so it does not usually lead to fever directly. Some infants may have increased metabolic activity and restlessness during teething, which can lead to a slightly higher body temperature than usual, which is usually not a fever. However, if an infant’s fever induces an infection such as gingivitis, he or she may have a fever, and if the parents do not adopt the appropriate solution in time, the condition gradually worsens and may lead to a further increase in body temperature. If a baby has a fever during teething, it is recommended to actively go to a regular hospital to do the relevant examination, to clarify the specific causes, and then targeted treatment, so as not to delay the condition.