Introduction: An increasing number of breast cancer survivors (BCS) use traditional Chinese medicine (TCM) throughout their cancer journey. There is emerging evidence that TCM is effective in the reducing side effects of chemotherapy.However, qualitative patient-centric and culturally relevant research into TCM use is scant. This qualitative study aimed to explore the use and perceptions of Chinese Hong Kong BCS using TCM.Methods: Participants were recruited from a university hospital and three breast cancer patient groups in Hong Kong. Questionnaires regarding the use of TCM were given to all participants, followed by individual semi-structured interviews on selected BCS to comprehensively understand TCM's use and perceptions. A greater emphasis was placed on the qualitative data.Results: About half of the participants (n = 67, 48.9%) used TCM during their cancer treatment journey, among which almost all (n = 64, 95.5%) had improved symptoms. Sleeping disturbances (n = 58, 86.6%) and fatigue (n = 53, 79.1%) were the two most common symptoms that improved after TCM. Interview data revealed that participants used TCM to satisfy unmet needs that mainstream conventional Western medicine could not fulfil. They wished for a sense of control and better well-being. They expressed improvements in physical and psychological well-being after the use of TCM. Despite existing barriers, including high cost, long duration of treatment, and disapproval from oncologists, most would still recommend TCM to fellow survivors. Conclusions:Chinese Hong Kong BCS who used TCM reported positive experiences. Understanding how BCS perceive and use TCM is important to integrating TCM into survivorship care in this population.