Abstract:【Objective】 To explore the value of fiberoptic bronchoscopy in cryptogenic organizing pneumonia diagnosis and treatment process. 【Methods】 6 patients clinical data finally diagnosed as cryptogenic organizing pneumonia by pathological basis via fiberoptic bronchial lung biopsy (TBLB) from 2008~2012 in our hospital were retrospectively analyzed. 【Results】 The average age of 6 cryptogenic organizing pneumonia patients was (52.5±12) years of age, the average time of onset was 2.5 months, clinical manifestations of cough, expectoration, exertional shortness of breath, fever, crackles on auscultation in 4 cases, no clubbing. WBC normal in 5 patients, increased in 1 case, the erythrocyte sedimentation rate, C-reactive protein increased in 5 cases, two cases of hypoxemia, 4 cases of restrictive ventilatory dysfunction, 5 patients with diffuse dysfunction. Imaging performance for the lesions bilaterally patching, consolidation, air bronchogram, mass. Pathological findings prompt submission lung tissue lesion morphology was bronchiolitis obliterans organizing pneumonia. All patients only once TBLB diagnosed, the process was simple and without complications. 6 patients were oral glucocorticoid treatment and recovery, follow-up of 2 years without concurrence. 【Conclusion】 COP is often misdiagnosed as lung inflammation, but anti-infective invalid. Lung imaging showed the diversity of the substance and interstitial changes. Diagnosis requires pathological basis, TBLB operation is simple, with fewer complications, positive rate, repeatability. Glucocorticoid is the most effective drug for COP, the prognosis is good.