Tongue numbness is generally caused by the following reasons: 1, tongue inflammation, tongue inflammation is generally caused by systemic diseases, such as vitamin deficiency, malnutrition, anemia, etc., if there is dental calculus, bad restorations in the mouth, or often eat spicy food can also lead to, mainly manifested as the front half of the tongue numbness, accompanied by burning pain, saliva reduction, dry mouth, etc., you can gargle with compound chlorhexidine containing solution, pain If the patient is older and has a long-standing ulcer on the tongue with irregular edges, hard base and not obvious pain, but has symptoms such as numbness of the tongue, restricted mouth opening and difficulty in tongue movement, the patient needs to be alert to the occurrence of tongue cancer and should go to the hospital in time; 3, caused by cerebrovascular disease, if the patient has high blood pressure, poorly controlled blood pressure, numbness of the tongue, slurred mouth, slurred speech, etc, crooked mouth, slurred speech, drooling and other symptoms, one needs to be alert to the possibility of cerebral hemorrhage and cerebral infarction, and it is recommended to go to the hospital immediately.