White spots and blisters in the throat of small children may be caused by herpetic pharyngitis, purulent tonsillitis, and acute pharyngitis. 1. herpetic pharyngitis: herpetic pharyngitis is mainly caused by enterovirus infection, manifested by fever, sore throat, etc. Grayish-white herpes can be observed in the pharynx during examination. 2. pyogenic tonsillitis: when tonsils become suppurative due to infection, it can lead to yellowish-white pus spots similar to blisters in the throat, accompanied by sore throat, loss of appetite, headache and other symptoms. 3. Acute pharyngitis: Acute pharyngitis can be triggered by viral infection of the mucous membrane of the throat or stimulation by cold air. Inflammation of the throat can lead to lymphoid follicle hyperplasia, resulting in white blisters in the throat. It is recommended to take the child to the hospital for relevant examinations to clarify the cause of the disease, and the doctor will formulate a personalized treatment plan according to the specific conditions for treatment.