The throat is red and swollen with red blisters, the blisters should be blisters, the main consideration is related to herpes pharyngitis, acute tonsillitis, acute pharyngitis. 1. Herpetic pharyngitis: most common in children, caused by viral infection, usually can be self-healing. 2. Acute tonsillitis: due to viral infection or type B hemolytic streptococcus infection, bilateral redness and swelling of tonsils may stimulate redness and swelling of the throat, leading to the appearance of redness and blistering of the throat. 3. Acute pharyngitis trauma or scalded while eating can lead to congestion and edema in the throat and lymphoid follicular hyperplasia. The redness and swelling of the throat with red blisters, should actively seek medical treatment, in the specialist doctor examination after a clear diagnosis, standardized treatment.