Adults with small bumps on the palate of the mouth are considered to be related to dietary factors, but may also be the emergence of mouth ulcers, warts and other diseases. 1. Dietary factors, if you do not pay attention to personal diet, often eat too hot, too stimulating food, may cause stimulation of the mucous membrane of the upper jaw of the oral cavity, so the symptoms of small bumps will appear. 2. oral ulcers, some patients have oral ulcers due to the oral area mucous membrane is stimulated, damage occurs, may lead to small bumps symptoms. 3. warts, some patients may be induced after contact with human papilloma virus warts, will lead to the oral mucosa tissue abnormal proliferation, so this symptom will appear. If there is obvious pain, itching or other uncomfortable symptoms appear, you need to consult a doctor in time for examination and treatment.