Objective To conduct a scoping review of studies on the application of zero-time exercise intervention in health promotion for adults, and to provide references for subsequent research and clinical nursing practice. Methods Guided by the Joanna Briggs Institute (JBI) guidelines for scoping reviews, relevant literature on the application of zero-time exercise intervention in health promotion for adults was retrieved from both domestic and international databases.The retrieval timeframe ranged from the inception of these databases to April 25, 2025, and the included literature was analyzed and summarized. Results A total of 8 articles were included.The content of zero-time exercise intervention encompasses three aspects:micro-exercises performed in sitting and standing positions, and behavioral substitution in daily scenarios.The outcome indicators mainly included physical activity level, quality of life, subjective well-being, symptom burden, interpersonal communication, mental health, as well as evaluations of feasibility and acceptability. Conclusion Zero-time exercise intervention exert a positive effects on exercise participation, physical activity levels, and health status among adults in both clinical and community settings.Future research should further explore the long-term effects of zero-time exercise intervention in different populations, its sustainability in practical applications, and promotion strategies, so as to promote public health.