As a result of global industrialization, the incidence of allergic diseases is increasing, and diseases that were once common in developed Western countries are becoming more and more common in our country. Allergy as a systemic disease, its occurrence has a universal age characteristics and laws, 2-3 months after birth, the first allergic manifestations of infants is associated with egg, milk and other food protein allergy skin eczema, or digestive symptoms such as vomiting diarrhea blood, etc., and then gradually aggravated, about 1 year of age to reach the peak, followed by a lot of can be relieved. However, some of the allergies in young children undergo some new changes as they grow older, and the symptoms change to cough and wheezing or rhinitis in the preschool period, and even progress to bronchial asthma and/or allergic rhinitis in the school-age or adolescent stage, which is imaginatively known as the “Allergy Progression”, and these children are often sensitized to a variety of allergens (including food allergens and inhalant allergens) in infancy and childhood. These children often develop sensitization to multiple allergens (including food allergens and inhalant allergens) in infancy and early childhood, which may last for a long time or progress from one allergen sensitization to multiple sensitizations, and therefore require targeted testing and necessary monitoring for early detection, treatment, and management of “allergy progression” in children. So the question is, can allergies be prevented at an early stage? 1.Pregnant mothers should eat a healthy and balanced diet, and supplement with fiber-rich vegetables and fruits. 2.Smooth delivery as far as possible. 3, Breastfeeding. 4, Reduce the use of unnecessary antibiotics. 5.Adding complementary foods to your child at the right time (5-6 months is the most appropriate). Some studies have shown that introducing solid foods when infants are 6 months old helps reduce the risk of infant allergies. 6.More contact with the natural environment, less use of disinfectants and antiseptics, to establish a moderately germy environment for your child! The main reason why our rural children have a higher prevalence of allergic diseases than urban children is that children born in rural areas are exposed to a variety of allergens from an early age, and along with growth and development, their bodies have become tolerant.