Gum herpes can be caused by an infection with the herpes virus in the mouth, causing herpetic stomatitis, resulting in small, dense patches of blisters on the gums. Blisters on the gums can also be caused by eating foods that are too hard or too hot, causing irritation of the gum mucosa and forming localized blisters or even blood blisters. Patients suffering from periodontitis when the pathogenic factors of periodontitis become more virulent or the immunity of the body is weakened, localized abscesses on the gums may appear, and during the period of abscess formation, the abscesses are very volatile and able to drain pus. In addition, when a tooth suffers from chronic periapical inflammation, mucosal redness, fistulas, inflammatory polyps, and even pustules will grow on the gingival surface corresponding to the tip of the tooth. In addition to this, herpes of the gums is also associated with vitamin B and vitamin C deficiency in the organism. Finally, having a more serious mucosal disease such as aspergillosis can also lead to blistering of the gums.