ObjectiveTo explore the research progress of sarcopenia in breast cancer patients, with a view to providing new ideas for the treatment and prognosis of patients with sarcopenia in breast cancer. MethodThe literature relevant to studies on sarcopenia and breast cancer at home and abroad was searched and reviewed in recent years. ResultsSarcopenia was highly prevalent in breast cancer patients and was associated with multiple poor prognoses in breast cancer patients. Exercise, nutritional support, and medication-assisted treatment could significantly improve the survival quality in breast cancer patients with sarcopenia. ConclusionsAs a common concomitant disease of breast cancer, sarcopenia seriously affects the survival quality and prognosis of patients. The development of sarcopenia in breast cancer patients should be closely monitored, and its mechanisms of action should continue to be studied and clarified in order to identify new therapeutic targets.