Updated project metadata. Diabetic cardiomyopathy (DCM) is one of the major causes of heart failure in diabetic patients, but its pathogenesis remains unclear. Sodium glucose cotransporter 2 inhibitors (SGLT2i) can effectively reduce the risk of cardiovascular death and heart failure in DCM patients, but the underlying mechanism has not been elucidated. We established a DCM rat model followed by treatment with empagliflozin (EMPA) for 12 weeks. The proteomics of the myocardium in the rat model was performed to identify the potential targets and signaling pathways associated with the cardiovascular benefit of SGLT2i.