A baby with red and swollen gums and a lot of blisters on the tongue is usually suffering from herpes pharyngitis or herpes stomatitis due to herpes virus infection. Patients should be advised to take anti-viral medications in a timely manner, such as Pudilan Oral Liquid, Shuanghuanglian Oral Liquid or anti-viral granules, which help to fight the virus and promote the healing of the mucous membrane as well as the healing of the herpetic surface of the tongue. You should pay attention to giving your child a diet rich in vitamins. In addition, you should pay attention to the cleanliness in the mouth and try to let your child brush his teeth normally if you can. If your baby is very young, you can also use gargling or clean your baby’s mouth with gauze dipped in water, which will help the recovery of herpes.