ObjectiveTo explore the effect of smoking cessation and prevention of passive smoking in patients with chronic obstructive pulmonary disease.MethodsA total of 300 patients with chronic obstructive pulmonary disease admitted to our hospital from March 2016 to December 2017 were selected as research objects.According to the time sequence of patients admitted,patients with odd numbers were divided into control group and patients with even numbers were divided into experimental group,with 150 cases in each group.The control group was given traditional treatment,and the experimental group was given smoking cessation and passive smoking prevention intervention on the basis of the control group.The clinical symptom score,pulmonary function index,treatment effect and 3 months follow-up after discharge were compared between the two groups.ConclusionBefore treatment,there was no statistically significant difference in the scores of clinical symptoms between the two groups(P>0.05).After treatment,the scores of clinical symptoms in experimental group were significantly less than those in control group,and the difference was statistically significant(P<0.05).There was no significant difference between the two groups in lung function indexes before treatment(P<0.05).After treatment,the pulmonary function index of the experimental group was significantly higher than that of the control group,and the difference was statistically significant(P<0.05).The total effective rate of patients in the experimental group was significantly higher than that in the control group(P<0.05).Three months after discharge,there were 24 cases of disease recurrence in the experimental group and 41 cases of disease recurrence in the control group.The disease recurrence rate in the observation group was 21.05%(24/114),it was lower than 67.21%(41/61)in the control group,and the difference was statistically significant(χ2=36.27,P=0.00).Conclusionsmoking cessation and prevention of passive smoking intervention have positive effects on improving lung function and reducing morbidity in patients with chronic obstructive pulmonary disease,which can be further promoted and implemented in clinical practice in the future.