Peritoneal fibrosis is regard as a significant cause of the loss of peritoneal function, markedly limiting the application of peritoneal dialysis(PD). However, the pathogenesis of peritoneal fibrosis remains unclear. Tissue-derived extracellular vesicles(EVs) mediate intercellular communications and play a central role in organ fibrosis. We performed a proteomics profiling of EVs from normal peritoneum and PD-induced fibrotic peritoneum in mice.