Herpes in the baby’s mouth needs to be treated according to its cause, such as herpes simplex virus infection, impetigo, hand, foot and mouth disease, etc. Choose general treatment or medication after a clear diagnosis. 1. Simple viral infection: baby mouth long herpes if the manifestation of clustered small blisters, no self-conscious symptoms or a slight burning sensation, may be due to the herpes simplex virus infection caused by perioral herpes simplex, you can choose to local topical acyclovir gel treatment. 2. impetigo: baby mouth long herpes if accompanied by ooze, honey yellow crust, but also visible pustules, accompanied by itching, ooze touched by the place will appear similar blisters, that need to be considered as impetigo, infectious, need to be isolated in time for treatment, and topical antibiotic ointment, such as mupirocin ointment. 3. Hand, foot and mouth disease: baby mouth long herpes accompanied by fever, hands, feet, buttocks and other locations appear red small macules and herpes, that need to be considered as hand, foot and mouth disease. The main symptomatic treatment, if necessary, give ibuprofen, acetaminophen and other non-steroidal anti-inflammatory drugs to reduce fever, while maintaining breathing. There are many causes of herpes in the baby’s mouth, it is recommended to seek timely medical treatment after the symptoms appear, all the above drugs should be used under the guidance of a doctor, and should not be used indiscriminately, so as not to lead to adverse consequences.