Serum TSLP level was found significantly correlated with total IgE (Spearman’s rho [r] = 0.48, P < 0.0001), FEV1/FVC ratio (r = −0.365, P < 0.05), and FEF25-75% pred (r= −0.06, P <0.05), whereas no correlations were found with age, BMI, or allergic rhinitis, atopic dermatitis, blood eosinophil counts. The gene discussed is TSLP; the disease is atopic eczema.