If your baby has ulcers and fever, the specific treatment is as follows: 1. Give treatment according to the cause of ulcers and fever, if it is a viral infection, give antiviral drugs for treatment; if it is a bacterial infection, give cephalosporin or penicillin antibiotics for treatment; if it is a mycoplasma infection, give macrolide antibiotics for treatment. 2. If the temperature is greater than or equal to 38.5℃, you can take oral antipyretic drugs, such as acetaminophen or ibuprofen to reduce fever, and at the same time, drink an appropriate amount of water to assist in physical cooling, which is conducive to the baby’s body temperature to normal. If the low fever state alone to give physical cooling is good, you can drink more water, you can also wipe with warm water, or use the way the fever patch to reduce fever treatment. 3, baby mouth ulcers will have pain, crying performance, can give the application of open throat sword spray spray on the affected area, repeatedly sprayed several times, can significantly relieve the symptoms of pain, but also conducive to the healing of ulcers, the disease must drink more water during the period, to help the recovery of the disease. During the period of the disease must drink more water, which is conducive to the recovery of the disease.