There are more reasons for white blisters in the throat, and the common causes may be related to herpetic pharyngitis, chronic pharyngitis, tonsil cysts and so on. 1. Herpetic pharyngitis: Herpetic pharyngitis is considered to be related to viral infection, the main clinical symptoms are sore throat, fever, and white herpes growth on the mucous membrane of the throat. This disease is mostly seen in children, and requires active antiviral and symptomatic treatment. 2. Chronic pharyngolaryngitis: chronic pharyngolaryngolaryngitis patients may have hyperplastic lymphoid follicles in the throat, the clinical manifestations of dry, itchy throat, foreign body sensation in the throat and so on. Lymphoid follicles are sometimes reflective when exposed to light and may look like white bubbles. Symptomatic treatments such as throat clearing are needed. 3. Tonsillar cysts: Tonsillar cysts can grow and protrude from the surface of the tonsils. For cysts in the upper pole, a white vesicular granule can be seen with the naked eye. If there is a foreign body sensation in the throat or a combination of chronic tonsillitis patients can consider surgery to remove the tonsils and cysts. White blisters in the throat may also be related to other causes, should consult a doctor to clarify the cause of the disease, and under the guidance of the doctor to carry out regular treatment.