ABSTRACTIntroductionIn response to evolving patient‐centred care initiatives, this study investigates teasing in Chinese outpatient interactions. By exploring how teasing impacts knowledge exchange and decision‐making processes, the research underscores its utility in enhancing patient engagement and communication efficacy, aligning with China's healthcare reform objectives.MethodsUtilizing conversation analysis, the study meticulously examines a series of outpatient interactions, identifying and analyzing instances of teasing. Through a detailed investigation of the sequential organization, design features, and interactional tasks accomplished by teasing, the research unravels the complex mechanisms through which teasing operates within clinical settings.ResultsFindings reveal that teasing is a sequential accomplishment that is intertwined with institutional contingencies and embedded in overarching sequential projects of clinics. Teases often arise from subtle cues that may lead to delicate moments and are crafted with a blend of playfulness and seriousness, serving to bridge the gap between patient experiences and medical expertise. This study highlights how teasing facilitates the exchange of knowledge and influences collaborative decision‐making, marking a departure from its more casual use in everyday interactions. Teasing acts as a catalyst for a more profound comprehension of medical facts, encouraging patients to actively participate in their care by expressing concerns and preferences, thus aligning medical decisions with patient autonomy. The responses to teases vary, reflecting the complexity of clinical communication and the need for a delicate balance between humour and professionalism.ConclusionsThe study underscores the significance of teasing as a multifaceted communicative practice within outpatient clinical interactions. It highlights how teasing can contribute to a more nuanced and patient‐centred approach to healthcare, enhancing the collaborative exploration of medical advice and fostering a more engaging and empathetic clinical environment.Patient or Public ContributionThis study utilized real outpatient interactions, with participants' informed consent. The analysis focused on authentic teasing exchanges between clinicians and patients, ensuring the findings reflect genuine communication practices in healthcare settings. Participants, including both healthcare professionals and patients, were informed about the study's goals and their essential role in providing insights into clinician–patient communication, contributing to a deeper understanding of interaction dynamics in outpatient clinics.