Objective To review the application and methods of ecological momentary assessment(EMA) on symptom managemet of with breast cancer patients,so as to provide reference for future researchers to use EMA in patients with breast cancer. Methods According to the scope review methodology,CINAHL,Cochrane Library,EMbase,PsycINFO,PubMed,Web of Science,WanFang Database,VIP,CNKI and CBM were searched.The retrieval period spanned from the establishment of the database to July 30,2024.The retrieved documents were screened and summarized. Results A total of 20 papers were included.The research objective focused on the relationship between breast cancer symptoms and physical activity,the relationship between breast cancer patients and their spouses,the relationship between breast cancer symptoms and insomnia,cognitive function and fatigue of breast cancer,and EMA feasibility.The outcome indicators included six categories:emotional symptoms,physical symptoms,psychosocial factors,behavioral factors,cognitive function and feasibility.EMA data collection mainly relied on smartphone and accelerometers,mostly through random or fixed signal prompts,1 to 6 times a day,with an interval of 0.5 to 11.0 hours,lasting for 5 to 28 days.The participation rate were 29.1%⁃100.0%.The response rate was 57.0%⁃100.0%.The churn rate was 0⁃44.9%.The reward was 15⁃130 dollars. Conclusions EMA is feasible in the management of breast cancer symptoms,and can accurately capture changes in symptoms of breast cancer patients at different points in time.In the future,more standardized EMA reporting guidelines can be further developed to explore the potential of EMA in breast cancer clinical care interventions and other areas to provide a scientific basis for the development of personalized treatment.