Blisters in the mouth after eating hot pot may be related to burns, while there may also be mucous gland cysts, mouth ulcers and other diseases. 1. Scalding, if the hot pot is hot during the hot pot eating process, it may cause some stimulation to the oral mucous membrane tissues, so the blistering symptoms will appear. 2. Mucous gland cysts, patients with mucous gland cysts may form blisters as the mucus gathers together, so this symptom will occur. 3. Mouth ulcers, if you often eat spicy and irritating food, it may cause irritation to the oral tissues, resulting in mouth ulcers, and therefore blistering symptoms will occur. Usually it is best not to eat hot pot often, keep a light diet, it is good for the body.