Allergen testing methods for children mainly include skin patch test, skin prick test and laboratory examination. 1. Skin patch test: Skin patch test is to use purified allergens and apply them to the skin surface of the child, then observe the skin reaction and irritation to determine whether the child is allergic to such allergens, which is more suitable for infants and young children. 2. Skin prick test: the allergen is injected under the skin of the patient after purification, and the skin reaction and the degree of reaction are observed within a certain period of time to determine whether the patient is allergic to the allergen. 3. Laboratory tests: such as blood tests, specific IgE and IgG antibodies can be checked to see if the child has an allergic reaction to the allergen. There are many ways to test for allergens, such as skin patch test, which does not require injections or blood draws and is more suitable for infants and young children.