The aim of this study is to investigate the intervention of traditional Chinese medicine (TCM) in managing the side effects experienced by breast cancer patients undergoing conventional Western medical treatments, such as blood cell decline, nausea, vomiting, gastrointestinal discomfort, and overall quality of life. The study aims to establish a long-term clinical enrollment criteria and process for TCM adjuvant therapy in breast cancer. The research design will utilize a prospective cohort study and real-world cross-sectional observational research method to obtain clinical data and survival status of the patients.