The numbness of the inner wall of the mouth may be caused by the physiological reason of eating peppercorns, or the degeneration of the oral mucosa, or the consumption of medication. The specific situation is different and specific analysis. 1. Physiological reasons: If you eat peppercorns or spices and other seasonings caused by the numbness of the mouth, is a normal phenomenon, can not be dealt with. 2. Oral mucous membrane degeneration: mucous membrane adjacent to the teeth excessively tilted to the outside, the edge of the teeth sharper, denture edge or surface roughness, etc., may cause chronic mechanical stimulation of the mucous membrane. Mucous membrane stimulation occurs after epithelial abnormal keratinization or poor keratinization, inflammatory reaction occurs, resulting in numbness of the inner wall of the oral cavity, you can hospital targeted treatment. 3. drugs: in ordinary life if a large number of taking certain drugs will also lead you to have oral numbness, such as gentamicin, streptomycin, etc., these drugs will lead to tongue and lip numbness. Therefore, in ordinary life must pay special attention, the drug must be taken under the guidance of the doctor. If the patient’s numbness of the inner wall of the mouth is serious, or the symptoms continue and do not get better, you should go to the hospital in time for treatment.