An allergic reaction is a physical problem of one's own constitution and belongs to hyperimmune function. It is usually caused by contact or use of substances or foods that are likely to cause allergies. In terms of treatment, the most important thing is to first find the allergen and try to avoid contact with it. Oral chlorpheniramine, terfenadine, vitamin C, and calcium gluconate can be taken; in severe cases, intravenous infusion of normal saline, cimetidine, dexamethasone, vitamin C, and intravenous injection of 10-15 ML of calcium gluconate can be performed; during treatment, no Eat seafood or spicy food.