There are many causes of facial swelling, such as facial infectious diseases, allergic diseases, and systemic diseases, etc. Patients are advised to consult a doctor in a timely manner to clarify the causes and then treat them under the guidance of a doctor. 1. Facial infections: facial infectious diseases such as boils, mostly caused by pathogens such as Staphylococcus aureus, can also cause facial swelling, accompanied by fever and other systemic symptoms. It is recommended that local anti-infection treatment be carried out under the guidance of a doctor, oral cephalosporin antibiotics, such as cefuroxime tablets, and also topical mupirocin ointment and other drugs; 2, allergic diseases: such as allergic dermatitis, urticaria, the pathogenesis of allergies leading to the release of histamine, resulting in local capillary dilation, water penetration into the facial tissue, resulting in the occurrence of facial swelling, which can be accompanied by skin itching and other symptoms. Patients need to pay attention to avoid the use of allergy-prone skin care products, allergic body do not eat allergy-prone food such as shrimp and other seafood food, can take loratadine tablets and other drugs under the guidance of a doctor for treatment; 3, systemic diseases: such as nephrotic syndrome, heart failure, cirrhosis ascites, etc., may cause water in the human blood vessels into the tissue, resulting in tissue edema, so that patients appear swollen face, can be treated by Urine routine, cardiac ultrasound, blood biochemistry and other tests to further clarify the specific cause. In the case of patients with nephrotic syndrome, diuretic drugs can be selected for treatment under the guidance of a doctor.