Eczema is a very common allergic inflammatory skin disease, known in Chinese medicine as “tinea cruris”, which is prone to recurrence and chronicity, often with intense itching and a polymorphic rash pattern. It is particularly common in infants and children under the age of 3 years. The cause of eczema is complex, caused by the interaction of internal and external factors. The internal factors are mainly self allergies, internal lesions, intestinal parasitic diseases, certain metabolic diseases, endocrine and digestive dysfunction. External factors include living environment, climatic conditions, chemicals, cosmetics, fragrances, alkaline soaps, artificial fibers, animal fur, certain animal toxins, fish, shrimp, crab, milk, eggs, chocolate and other foreign proteins, certain plant stems and leaves and pollen, dust, dust mites, etc. Urticaria: commonly known as “rubella”, characterized by temporary erythema or edema of the skin or mucous membranes. The causes of urticaria in children are usually food, drugs, insect bites, environmental factors, but also infections (bacteria, viruses, etc.), with a genetic predisposition. The rash is varied, round, oval or irregular in shape, and can fuse into large patches. The rash comes and goes quickly and does not leave any traces after fading. Urticaria attacks may be accompanied by systemic symptoms, such as abdominal pain, chest tightness, shortness of breath and fever, indicating that the mucous membranes of the gastrointestinal tract and respiratory tract are also involved. If these symptoms are accompanied by urticaria, the child should be seen by a doctor at any time, and in severe cases, hospitalization is required. Other: Allergic rhinitis and allergic conjunctivitis can also be combined in children with allergies.