Summary of case history ,The patient Li, male, 2.4 years old, visited Dongfang Hospital on May 23, 2019 mainly for "cough and wheezing for over 2 months". On March 20, 2019, the child was hospitalized in Shanxi Children's Hospital because of persistent high fever, cough and wheezing. He was diagnosed as severe pneumonia. After 1 week of treatment, his body temperature was normal, and his cough and wheezing were relieved. Cough and wheezing were repeated after discharge, and aggravated after activity. In April 2019, a bronchiolitis obliterans was diagnosed according to chest CT results and anti-inflammatory and inhalation treatment was given. In May 2019, he was admitted to the hospital again because of pneumonia. After the pneumonia was alleviated, post-discharge Chinese Medicine treatment was given in specialist outpatient clinic of Dongfang Hospital. Information of four diagnostic methods in the first visit: cough (significant after physical activity), sputum wheezing in the larynx, occasional dyspnea and fatigue without obvious panting, night sweat, unfavourable appetite, secure sleep, normal stool and urine, pale tongue with thin and white coat, pale finger vein color.,TCM Diagnosis, pneumonia with dyspneic cough (Qi deficiency with phlegm stasis pattern).,Western Medicine Diagnosis, bronchiolitis obliterans.,Therapeutic methods ,Western medicine symptomatic treatments was given, including anti-inflammation and inhalation, while in traditional Chinese medicine the disease was divided into acute phase and remission phase, which were respectively treated with the methods of dispersing and discharging lung, invigorating spleen and tonifying lung, eliminating dampness and removing phlegm. Specifically, the method of invigorating blood and dissolving stasis in collateral should be applied throughout the treatment.,Clinical outcomes ,after integrated Traditional Chinese and Western Medicine treatment, a chest CT in July 2021 showed no obvious abnormalities and airway resistance was generally normal.