Objectives: This study examined the characteristics and related factors by comparing the lifestyles and health behaviors between Korean Seventh-day Adventists and the general population of Korea. Methods: A survey was conducted of 878 people more than 20-years-old Korean Seventh-day Adventists who live in the metropolitan area and 3,000 people more than 20-years-old who live in the metropolitan area in 4th (2nd year) National Health and Nutrition Survey. A comparison of health behaviors related to health screenings, smoking, drinking, physical activity, subjective stress, weight management, and oral health was analyzed using a chi-square test. Logistic regression analysis was used to identify the contributing factor to the health behavior. Results: Health screening rates among Korean Seventh-day Adventists were higher than the general population (p<0.001), but Korean Seventh-day Adventists showed lower rates of health screening in the 20-30 ages. Lifetime smoking experience rates and current smoking rates were significantly lower in the Korean Seventh-day Adventists than in the general population (p<0.001). The success rate of smoking cessation among ex-smokers of Korean Seventh-day Adventists were very high. In terms of the drinking rate, Korean Seventh-day Adventists were significantly lower than the general population (p<0.001). The drinking rate of men was higher than women (p<0.001). Moderate physical activity of men were higher than women in Korean Seventh-day Adventists (p<0.001). Conclusion: The lifestyles and health behaviors of Korean Seventh-day Adventists, such as tobacco smoking and alcoholic drinking, were eminently healthier than the general population. Nevertheless, further well-organized studies will be needed.