A total of 133 smokers visiting our smoking cessation clinic from February 2009 to September 2010 were studied.The data were collected during initial assessments and over a follow-up period of 24 months.Long-term abstinence rate was observed.And logistic regression was employed to identify the independent predictors of successful quitting.There were 132 males and 1 female with a mean age of 47 years.They smoked an average of 26 cigarettes per day.The mean duration of smoking was 25 years.Among them,57 smokers (42.9％) were severely nicotine dependent and 76 smokers (57.1％) were followed up for 24 months.And 20 smokers (26.3％) maintained 24 month abstinence.The predictor of avoiding relapse was immediate family members being nonsmokers.