Bilateral facial numbness is categorized into physiological and pathological, and the pathological causes mainly include neurological diseases, cardiovascular diseases and endocrine diseases. 1. Physiological: if the face is exposed to the cold wind, the environment will be too cold to cause blood circulation obstruction, resulting in bilateral facial numbness, which is a normal physiological phenomenon, transfer to a warmer environment can be restored to normal, without special treatment. 2. Pathological: Guillain-Barre Syndrome is an acute inflammatory peripheral neuropathy caused by immune response, which often results in decreased muscle strength and sensory sensitivity. There are symptoms that may manifest as numbness on both sides of the face. Peripheral neuritis caused by poisoning such as diabetes or heavy metals can also lead to symptoms of numbness on both sides of the face due to peripheral nerve damage. If you suspect that the numbness on both sides of the face is pathologic, it is recommended to go to the hospital in time to avoid delaying the condition.