Abstract:Objective To observe the role of bronchoscopy lavage treatment for severe mycoplasma pneumoniae pneumonia (SMPP) in children.Methods 47 children with SMPP were treated with bronchoalveolar lavage from December 2018 to August 2019 were selected as the study object (treatment group). Meanwhile, previous hospitalized patients without bronchoalveolar lavage from March 2018 to November 2018 were selected as the control group (n = 47). The clinical symptoms, improvement time of pulmonary signs, glucocorticoid application time, hospitalization time, hospitalization cost and recovery of pulmonary lesions were analyzed in the two groups.Results The febrile period, time of disappearance of rales in the lungs, the time of glucocorticoid application and the days of hospitalization in the treatment group were significantly lower than those in the control group (P < 0.05). The recovery of pulmonary ultrasound in the treatment group was better than that in the control group at discharge (P < 0.05). However, there was no significant difference in hospitalization expenses between the two groups (P > 0.05). In the treatment group, endobronchial congestion, edema, increased secretion, mucus thrombus formation and poor segmental bronchial ventilation could be seen under bronchoscopy.Conclusion In children with SMPP, the timely application of bronchoalveolar lavage technique on the basis of routine treatment can clear mucus secretions, reduce inflammatory reaction, keep airway unobstructed, shorten the course of disease, contribute to the recovery of pulmonary lesions, and play an important role.