Small bumps on the posterior wall of the pharynx may be lymphoid follicles on the posterior wall of the pharynx, which are hyperplasia or enlargement of lymphoid follicles caused by tonsillitis and pharyngitis, or pharyngeal papilloma. 1. Tonsillitis: Tonsillitis is mainly caused by staphylococcus and streptococcus infections, which can lead to lymphoid follicle hyperplasia in the throat area, so small bumps appear. In addition, sore throat, generalized fever, headache and fatigue can also occur. 2. Pharyngitis: acute infection of the throat, or long-term chronic inflammatory stimulation, the bumps will be obviously raised, red, large, but also can be fused together. 3. Pharyngeal papilloma: pharyngeal papilloma virus infection in the process of repairing the mucous membrane damage at the back wall of the pharynx, the growth of pharyngeal papilloma, which can be manifested as small bumps. It is recommended that patients go to the hospital to find out the nature of the bumps, and follow the doctor’s instructions to standardize the use of drugs and treatment.