Objective To explore the imaging identification value of CT and MRI in chronic obstructive pulmonary disease. Methods 71 patients with chronic obstructive pulmonary disease admitted into the hospital from April 2013 to December 2014 were selected as the observation group,and 71 cases of healthy physical examination as the control group.MRI and CT were respectively performed in two groups.CT measurement,pulmonary function indexes and results of COPPD type for two kinds of methods were compared between the two groups. Results The RV,TLC,left lung, right lung and whole-lung E/L in the observation group were higher than those in the control group,whileFEV1 and FEV1/VCMAX were lower than those in the control group and the comparison was statistically significant (P<0.05).There were 69 cases of confirmed diagnosis with CT examination and the sensitivity was 97.2% which was significantly higher than that of MRI and the comparison was statistically significant (P<0.05). Conclusion CT for diagnosis of COPD can better display pathological changes of lung tissue and structure in patients,which is conducive to the early diagnosis with higher sensitivity.Combined with MRI,it can be used to identify patients with ventilation,perfusion and respiratory mechanics information,which can provide a powerful reference for clinical treatment.