Oral herpes is likely to heal spontaneously in about 3-6 days, and the fever lasts about 3-4 days and the body temperature will gradually decrease and return to normal. Oral herpes is usually associated with a localized viral infection of the mucous membranes, which is usually self-limiting. After localized herpes is formed, the lesion will grow and heal in about 3-6 days. Sometimes after the appearance of oral herpes, due to viral infection may also lead to fever, need to pay attention to physical cooling and active observation, the patient’s body temperature may gradually decline after 3-4 days. If oral herpes occurs, you need to maintain oral hygiene and cleanliness, and appropriate symptomatic treatment, if the condition continues to worsen, then we should consult a doctor for examination, and if necessary, follow the doctor’s instructions to use acyclovir or ribavirin and other antiviral drugs to actively treat.