Numbness of the palate and tongue may be due to localized blood supply deficiencies, or it may be caused by eating or drinking certain foods. 1. Inadequate blood supply. Numbness of the palate and tongue may be caused by poor circulation at the end of the body, abnormal sensation of the mucous membranes of the palate and tongue, or it may be caused by insufficient local blood supply or insufficient blood supply to the brain. 2. Due to dietary food. Numbness of the palate and tongue may also be caused by eating and drinking food such as pepper, or eating poisonous food such as grasshopper. Numbness of the palate and tongue numbness may also be burning mouth syndrome, manifested by local sensory abnormalities, but no oral clinical manifestations, specific recommendations to the hospital in a timely manner to check the causes of numbness as soon as possible, to avoid affecting the health of the body.