Causes of throat blisters in adults include herpes pharyngitis, aspergillosis, and blistering oral lichen planus, etc. The most important treatment is medication, which includes both topical and internal use. 1. Herpetic pharyngitis: clusters of small blisters can be seen gathering at the back of the mouth. Commonly used drugs include vitamin B2, interferon alpha and ribavirin. For those with high fever, physical cooling such as cold compresses, or medications such as ibuprofen can be used. 2. Pemphigus: As in the case of pemphigus vulgaris, the oral cavity is the earliest site of lesions. Commonly in the oral cavity there are 1 to 2 or widely scattered blisters of varying sizes. The drug of choice for this disease is adrenocorticotropic hormones such as prednisone. Other drugs include immunosuppressive drugs such as azathioprine and cyclophosphamide. 3. Blistering oral lichen planus: adrenocorticotropic hormone ointment and stomatitis spray can be used locally. Oral medications include prednisone, chloroquine, levamisole, etc. In addition to the above causes, diseases such as acute pharyngitis can also cause the above symptoms. If the above symptoms are severe or persist without improvement, patients should go to the hospital in time to identify the cause of the disease and carry out targeted treatment. All of the above medications should be used under the guidance of a doctor, avoid self-medication.