Nowadays, sepsis and septic shock have become major public health problems, which are the main cause of death among patients admitted to the intensive care units. Notably, myocardial dysfunction during sepsis, usually called sepsis-induced myocardial depression, is common in septic shock patients whose incidence is about 70% and leads to a high mortality. However, the mechanism underlying the septic myocardial depression is still unclear. Recently, proteomics has become a powerful method for explore protein dynamics and their complex regulatory mechanism, and thus generates a profound impact on precision medicine and the clinical setting. Importantly, the expression patterns of global proteins in heart tissue between sepsis and control group remain unclear. Therefore, we performed the rat models of sepsis-induced myocardial depression and investigated global protein expression profiles in heart tissue between sepsis and control group using 4D label-free proteomic technique.