Blisters on the tongue can be caused by mouth ulcers, burns, viral infections and other causes. It can be relieved by adjusting the mind, rinsing the affected area with cold water and using medication. 1. Mouth ulcers: long-term in a state of tension and anxiety or overwork, easy to induce caused by mouth ulcers, there will be the phenomenon of blisters on the tongue, usually pay attention to adjust the state of mind, can be relieved by applying lidocaine gel. 2. Scalding: drinking hot water or eating too hot food, scalding the tongue, resulting in blisters on the tongue, you can take cold water to rinse the affected area, apply recombinant bovine alkaline fibroblast growth factor gel and so on for relief. 3. Viral infections: When the body’s immunity is lowered, it is easy to be infected by viruses, commonly known as oral herpes, which can be manifested as blisters on the tongue, and can be relieved by taking antiviral medicines such as ribavirin tablets and acyclovir tablets. There may be other reasons for the blisters on the tongue, so it is recommended that the patient go to the hospital in time to clarify the cause of the disease and follow the doctor’s instructions to standardize the treatment.