Objective:To explore the effects of Baizi Weijing Decoction combined with acupoint massage on children with mycoplasma pneumonia in terms of respiratory mechanics，pulmonary function，and T-cell subsets.Methods:80 children with mycoplasma pneumonia were selected as research subjects and randomly divided into two groups，40 cases each. Both groups received conventional treatment，the control group additionally received acupoint massage，and the observation group was treated with Baizi Weijing Decoction based on the control group.The clinical efficacy，traditional Chinese medicine syndrome scores，relevant respiratory mechanics indicators，T lymphocyte subsets，and pulmonary function of the two groups were compared.Results:The observation group had shorter hospital stays（6.59 ±1.15 days），time to body temperature normalization（3.18 ±0.85 hours），time for cough disappearance（3.98 ±0.96 days），time for lung rales disappearance（5.82 ±0.54 days），and time for dyspnea disappearance（3.74 ±0.34 days）compared to the control group，which had hospital stays of（9.26 ±1.25 days），time to body temperature normalization（5.87 ±1.03 hours），time for cough disappearance（5.18 ±0.72 days），time for lung rales disappearance（7.11 ±0.69 days），and time for dyspnea disappearance（5.42 ±0.45 days）.The differences between the two groups were statistically significant（P＜0.05）；after treatment，the traditional Chinese medicine syndrome scores for sore throat，fever，cough，and muscle aches in the observation group were（1.15 ±0.26），（1.39 ±0.17），（0.93 ±0.11），and（1.07 ±0.20），respectively，which were lower than those in the control group（P＜0.05）.After treatment，both groups of children showed improvements in oxygenation index and respiratory rate，with the observation group having a higher oxygenation index and a significantly lower respiratory rate than the control group（P＜0.05）.After treatment，the comparison of pulmonary function-related indicators and T lymphocyte subsets between the two groups showed the observation group was significantly better than the control group（P＜0.05）. Conclusion:Baizi Weijing Decoction with acupoint massage can improve the clinical efficacy，accelerate recovery，and improve respiratory mechanics and lung function in children with mycoplasma pneumonia.