Smoking cessation is the process by which individuals discontinue the use of tobacco products, primarily cigarettes. As an academic concept and research field, it encompasses the systematic study of the psychological, physiological, social, and environmental factors influencing the ability to achieve and maintain abstinence from smoking. This research investigates the determinants of successful cessation, evaluates the efficacy and mechanisms of diverse interventions (including behavioral, pharmacological, and policy approaches), and seeks to understand the long-term outcomes and relapse prevention strategies. Its significance is paramount in global public health efforts to mitigate the burden of tobacco-related diseases.