Herpes in the baby’s mouth is usually caused by a virus. It is important to check promptly if there is herpes on the palms and feet to avoid being a hand, foot and mouth disease. And the treatment can use anti-viral drugs, such as Shuanghuanglian, Banlangen, these clearing and detoxifying drugs can be antiviral treatment. If the baby has a fever and the temperature exceeds 38.5 degrees or more, you can use antipyretic drugs such as Merlin and Tylenol to avoid high fever convulsions, and also with the supportive therapy of infusion. To maintain oral hygiene in the mouth, you can usually gargle with saline, drink more water to bring down the body temperature, and to replenish nutritious substances, avoid crowded places, to abstain from greasy food, and recommend a light diet. If the herpes breaks out in the mouth, there may be pain, you can apply painkillers on the surface.