The causes of facial numbness are as follows: 1, the lateral side is limited to the face, consider peripheral neuropathy, such as peripheral nerve inflammation, peripheral nerve dystrophy, treatment to nourish the peripheral nerve; 2, partial body numbness, unfavorable speech, partial body limb activity strength is reduced, consider brain problems, such as cerebrovascular disease, cerebral infarction, cerebral hemorrhage, brain tumors; 3, the transient occurrence of repeatedly aggravated or reduced numbness, is For peripheral neuropathy, peripheral neurotrophic drugs, such as methylcobalamin and vitamin B1, are available.