Blistering of the mouth after a fever is a case of follicular stomatitis. Because of the fever when the body heat is relatively large, after the fever subsides heat toxicity out will lead to the mouth blistering situation. This situation usually pay attention to rinse the mouth with warm salt water to keep the mouth clean. You can take medications to clear the heat and detoxify the toxins, such as niuhuang detoxification tablets, compound jinyinhua granules for treatment, and spray watermelon cream aerosol in the mouth for anti-inflammatory. In addition, we should pay attention to drink more warm water, eat more vegetables, fruits: Sydney, Luo Han Guo, more chrysanthemum tea to drink, can also play the effect of heat, strictly prohibited fried, spicy and other stimulating food, life pay attention to not stay up late, overworked to avoid aggravating the fire.