White pus spots inside the throat can be triggered by many diseases, including acute pharyngitis, acute tonsillitis, pharyngeal keratosis, and so on. 1. Acute pharyngitis: viral and bacterial infections can cause the disease, and the mucous membrane of the oropharynx is acute diffuse congestion and swelling. The lymphoid follicles in the posterior wall of the pharynx are elevated, and yellowish-white punctate exudates can be seen on the surface. 2. Acute tonsillitis: type B hemolytic streptococcus is the main causative organism of this disease, after the onset of inflammation can be seen to invade the lymphoid follicles in the tonsillar parenchyma, resulting in congestion, swelling and even suppuration. The yellowish-white spots can be seen under the mucous membrane between the crypts. 3. Pharyngeal keratosis: abnormal keratinization of lymphatic tissue in the pharynx, mostly occurring in the palatine tonsils and lingual tonsils. Keratosis pilaris mainly occurs in the epithelial layer of the crypt of palatine tonsil or between the follicles of lingual tonsil. On examination, a yellowish-white embolic or spiculated growth is seen protruding from the surface at the opening of the crypt. It is recommended to find white pus spots inside the throat, go to the otorhinolaryngology department of the regular hospital in time for a detailed examination, and follow the doctor’s instructions for standardized treatment.