The ability of patients with hives to eat sweet potatoes is based on individual circumstances. However, through clinical observation and allergen testing, it is possible for patients with hives to eat sweet potatoes, as few people are allergic to them. The main components of sweet potatoes are fiber and vitamins, while the protein content is not very high. Patients with urticaria are mainly allergic to some heterogeneous proteins, such as fish, shrimp, seafood, nuts, egg whites, milk and other allergies are more common. Therefore, hives patients can be based on their own situation to discretionary, discretionary consumption of sweet potatoes. At the same time, if once the reaction of allergy is found, to take oral antihistamine drugs, such as commonly used cetirizine, loratadine, imipramine, etc., these drugs can relieve the symptoms of hives.