The causes of swollen eyes, mouth and facial numbness include intracranial diseases, allergies, and vegetative nerve dysfunction. 1. Intracranial diseases: for example, acute cerebral infarction, intracranial tumor, etc., leading to brain cell damage, trigeminal spinal tract nucleus injury, there will be symptoms of swollen eyes, mouth and facial numbness, etc.; if acute cerebral infarction after the onset of thrombolytic therapy, endovascular intervention, etc.. Intracranial tumors can be treated by surgical resection of tumor, chemotherapy or radiotherapy. 2. Allergy: Allergy caused by various reasons will have symptoms such as swollen eyes, numbness of mouth and face accompanied by itchy skin, etc.; clarify the cause of the disease and follow the doctor’s instruction to take anti-allergy drugs, such as cetirizine, loratadine, etc. 3. Vegetative nerve dysfunction: mainly related to environmental factors, psychological factors. At the onset of the disease, due to abnormal secretion of neurotransmitters and endocrine disorders, symptoms such as swollen eyes, numbness of the mouth and face can occur; after the onset of the disease, it is necessary to adjust the daily life style and orally take medicines such as ghrelin to adjust the nerves. Swollen eyes, mouth and facial numbness, there may be other reasons, it is recommended that patients go to the hospital in a timely manner to clarify the cause, under the guidance of the doctor for treatment, do not blindly use their own medication.