Reducing the level of emotional expression conflict of patients is of great significance to promote the functional recovery of breast cancer patients,improve their prognosis and improve their quality of life.We introduce the research progress of ambivalence over emotional expression in breast cancer patients in terms of the connotation,measurement tools,influencing factors,and intervention methods.There is still a lack of research on measuring the emotional expression conflict of breast cancer patients in China,and it is still necessary to develop a measurement tool with cultural characteristics to obtain the true level of emotional expression conflict of patients.In clinical practice,complementary and alternative medicine,cognitive behavioral intervention,mindfulness training,expressive writing intervention,and other intervention strategies have achieved certain results in improving patients'negative emotions,but personalized intervention strategies still need further exploration.