Atopic dermatitis is a chronic pruritic skin disease with lesions that appear as eczema or itchy rashes. Atopic dermatitis is now generally considered incurable at home and abroad. The main reasons are: 1) some patients with atopic dermatitis have hereditary skin barrier dysfunction, and there is no solution to this hereditary problem; 2) some patients with atopic dermatitis have immunological abnormalities, and these immunological abnormalities may be lifelong, such as “allergy” is lifelong, once allergic, lifelong difficult to Once allergic, it is difficult to recover. However, atopic dermatitis is not absolutely incurable. First of all, not all patients have inherited abnormalities in skin barrier function, some of them are caused by acquired factors and can be recovered if the causative factors are avoided. Furthermore, even if the skin barrier function is genetically abnormal, the lesions can still be eliminated if care is taken to protect and restore the skin barrier function. The same is true for allergies. If the allergen is clearly identified and the allergen can indeed be avoided, a disease-free state can also be achieved.