To analyze the effect of Feipingxiao Decoction（肺平哮汤）combined with respiratory rehabilitation on pulmonary function and immune function in children with bronchial asthma.

A total of 150 children with bronchial asthma admitted to the hospital were selected and randomly divided into control group and observation group，75 cases in each group.The control group was treated with inhaled glucocorticoids，and the observation group was given Feipingxiao Decoction combined with respiratory rehabilitation on this basis，and both groups were treated for 7 days.After treatment，the clinical treatment effect，symptom disappearance time，lung function，inflammatory factors and immune function were compared between the two groups.

The total effective rate of the treatment observation group was 90.67%，which was significantly higher than that of the control group（73.33%）（P<0.05）.After treatment，the disappearance time of wheezing，rales，asthma and cough symptoms in the observation group was significantly shorter than that of the control group（P<0.05）.The levels of forced expiratory volume in 1 second（FEV1），forced vital capacity（FVC）and FEV1/FVC in both groups were significantly improved after treatment（P<0.05）.The improvement of each index in the observation group was significantly better than that in the control group（P<0.05）.The levels of C-reactive protein（CRP）and transforming growth factorβ1（TGF-β1），tumor necrosis factor-α（TNF-α）and interleukin-4（IL-4）were significantly lower than those before treatment（P<0.05）.The improvement of the indicators in the observation group was significantly better than that in the control group（P<0.05）.After treatment，the levels of immunoglobulin G（IgG），immunoglobulin A（IgA）and immunoglobulin M（IgM）were significantly higher than those before treatment（P<0.05），and the improvement of various indicators in the observation group was significantly better than that in the control group（P<0.05）.

Feipingxiao Decoction combined with respiratory rehabilitation can significantly improve the clinical treatment effect of children with bronchial asthma，promote the improvement of clinical symptoms，reduce the levels of inflammatory factors，and improve the pulmonary function and immune function of children.