Angioneurotic edema can be divided into acquired angioedema and hereditary angioedema. Patients can be treated with antihistamines, antifibrinolytics, epinephrine and other drugs, and fresh plasma needs to be imported to alleviate the symptoms during acute attacks. 1. Acquired angioedema: Acquired angioedema can be treated with antihistamines such as chlorpheniramine and loratadine to inhibit the occurrence of allergic reactions. Epinephrine can also be used to treat choking caused by laryngeal edema. 2. Hereditary angioedema: Hereditary angioedema can be relieved by fresh plasma intake during acute attacks. Antifibrinolytic drugs such as 6-aminohexanoic acid can also be used to prevent attacks. It is recommended that patients strictly follow the medication prescribed by the doctor in their daily life, take more rest, and strictly abstain from smoking and drinking.