A white bump inside the mouth, the first consideration is oral ulcers, ulcers on the surface can appear white or yellow-white pseudomembrane, can be accompanied by pain, patients are advised to use chlorhexidine gargle, ice borax, compound benzocaine gel and other medications under the guidance of a doctor. In addition, may also be related to the following factors: 1, oral mucosa damage: due to bite, tooth remnant crown friction or are using metal braces orthodontics, prolonged friction may cause mucosal damage, local hyperplasia, inflammation, rupture, the formation of a white scar tissue. Generally no special treatment is needed, if the pain is obvious, you can follow medical advice to use ice borax, lidocaine gel and other drugs to repair the trauma, and adjust the relevant stimulus factors in a timely manner; 2, thrush: is a disease caused by Candida infection, manifested as a white membranous material on the oral mucosa, due to covering the mucosa, showing a white bump. Oral fluconazole often has a better antibacterial effect, but may cause nausea, vomiting and other adverse reactions; 3, mucous gland cysts: generally light blue, translucent, soy-sized or even cherry-sized blisters, due to the light color, may cause visual errors, surgical removal is a common treatment; 4, oral polyps: generally related to long-term inflammation of the oral cavity, manifested as a limited mucosal elevation, hyperplasia of swelling, may appear white, generally need to be surgically removed for treatment; 5, lingual papillary hyperplasia: lingual papillary hyperplasia is often associated with chronic pharyngitis, oral inflammation and other factors, patients can follow medical advice to use amoxicillin, roxithromycin, metronidazole and other drugs for treatment; 6, oral mucosa white spots: divided into homogeneous type, warty type, granular type, ulcerated type, can appear white plaque-like raised, can be accompanied by pain. Patients can use vitamin A, vitamin A acid, vitamin E, cod liver oil, etc. for local treatment or surgical removal under the guidance of doctors. In addition, infection with human papilloma virus in the oral cavity can also cause condyloma acuminatum, which causes a white raised bump in the mouth. Lymphatic follicular hyperplasia of the posterior pharyngeal wall can also cause these symptoms, and patients are advised to seek prompt medical attention.