Abstract: ［Abstract］Objective　To explore the application value of DOSE index score in the peitients with chronic obstructive pulmonary disease．Methods　122 cases of plateau COPD patients were followed up for 12 months， and we recorded and analyzed the patient's health and life. We also recorde FEV1 and DOSE scores of the patients with COPD，and record the COPD risk events，including the number of respiratory failure and death，and the times of hospitalization， total such confinement， outpatient expenses，hospitalization expenses，mMRC，and scored in the number of exacerbations，etc．Results　The DOSE index score was negatively correlated with FEV1 % pred （r＝0.73，P ＜ 0.05） for 122 COPD patients， and were positively correlated with mMRC （r＝085，P ＜ 0.01），the annual number of exacerbations （r＝0.71，P ＜ 0.01）， respiratory failure （r＝0.65，P ＜ 0.01）， heart failure （r＝0.50，P ＜ 0.01）， number of outpatient service （r＝0.12，P＜0.01）， hospitalization time （r＝0.70， P＜ 0.01）， the total such confinement （r＝0.66， P＜0.01）， outpatient expenses （r＝0.13， P > 0.13）， hospitalization expenses（r＝0.65， P＜0.01）. ROC curve was used to analyzed the cut-off point and curve area of COPD DOSE index．Conclusion　The DOSE index is a simple COPD assessment tools， and is closely related to the prognosis of patients and health.