Baby allergy is a very common phenomenon, at the same time caused by allergy causes are many, and allergy performance is also a variety of common allergic manifestations of small children have repeated skin eczema, often rubbing the eyes of the runny nose, sneezing, small children often coughing, manifested in the evening or the morning of the stimulation of coughing, serious can be combined with asthma, some babies can be manifested as a long period of diarrhea, through the peripheral blood test, can be found eosinophilia, allergen test can be found many positive reactions to allergens. Some babies may have chronic diarrhea, and through peripheral blood tests, eosinophilia can be found, and allergen tests can reveal that many allergens are positive. So how should we treat babies when they have the above allergy symptoms? First of all, it is very common for allergies in children to manifest themselves as skin symptoms, often in the form of eczema or hives. If the eczema is caused by an allergy to milk powder, it is necessary to temporarily use deeply hydrolyzed protein milk powder or amino acid formula, and pay attention to skin moisturizing, and severe eczema needs to use glucocorticosteroid ointment, such as Eudesmol, Dinhydrin cream, or Eloxon, and so on. If the rash is hives-like, apply topical glycerite and take oral anti-allergy medication, such as cetirizine drops or desloratadine drops. For severe asthma, oral montelukast chewable tablets or nebulization may be used. For children with immune disorders, immunomodulatory preparations such as Goji Huang Granules, Splenopeptide Lyophilized Powder, etc. can be used. If the child has a single dust mite allergy, specific desensitization therapy can be used for radical treatment. If the baby has allergies, we must find the cause of the allergy as soon as possible, active etiological treatment and symptomatic treatment are very important.