Small particles in the throat may be lymphoid follicles, tonsil stones and so on. 1. Lymphoid follicles: the lymphoid tissue on the mucous membrane of the normal pharynx of the human body is called lymphoid follicles. The main role is the mucous membrane of the throat by bacteria and viruses, secretion of T lymphocytes and B lymphocytes, phagocytosis of foreign pathogens. In chronic hypertrophic pharyngitis, lymphoid follicles proliferate, the mucosa is chronically congested and hypertrophied, and there is extensive connective and lymphoid tissue proliferation under the mucosa, forming granular elevations on the posterior pharyngeal wall. 2. Tonsil stones: various reasons lead to increased tonsil secretion, tonsil crypt mouth blockage, secretion drainage is not smooth, leading to crypt deep decayed food debris, shed epithelium, colonies and other primers can not be discharged in a timely manner, wrapped in secretion, sediments accumulated for a long time, calcification and hardening, the formation of white hard particles that tonsil stones. It is recommended that patients seek medical attention to check the causes of small particles in the throat, and actively cooperate with the doctor to guide the treatment program.