This study explores the health behaviors and related situations of Korean low-income breast cancer survivors using in-depth interview. The study derives 95 concepts, 23 sub-categories and 12 categories in open coding. Illness experiences were categorized by behavioral, psychological, and social domains, cognitive were categorized by causal and destiny thought, emotions were categorized by negative, positive emotion, reserve capacity were categorized by internal and external domains and health behaviors were categorized by behavioral, psychological, and social domains. Understanding illness experience, cognitive, emotion, reserve capacity and health behaviors for Korean low-income breast cancer survivors will be useful in developing social welfare interventions and for enhancing health promotion.