Abstract:Objective To investigate the clinical significance of serum Periostin in children asthmatic. Methods A total of 148 cases of children asthma were involved in this study. Children were sub-grouped into uncontrolled asthma (n?=?58), partly controlled asthma (n?=?45), complete controlled asthma (n?=?45) and healthy controls (n?=?27). Enzyme-linked immunosorbent assay (ELISA) was performed to detect the serum Periostin. Lung function was examined in all asthmatic children. Results The serum level of Periostin was the highest in uncontrolled asthmatic while that was the lowest in complete controlled group (P?< 0.05). No statistically significant difference in serum Periostin was observed between partly controlled group and healthy controls (P?>?0.05). Children in complete controlled group experienced the highest value of FEV1 % in complete controlled group when compared with that in other asthmatic children (P?0.05). The serum level of Periostin in asthma group was negatively correlated with FEV1 % (r?=?-0.729, P?=0.000). Conclusions Serum level of Periostin alone is not satisfactory to determine the disease control status of asthmatic children though patients may experience obvious elevation of Periostin during onset of asthma.