Ethylene, as a signaling hormone molecule, is proved to have essential role in the process of root development. In the present study, cucumber (Cucumis sativus L.) seedlings were employed to estimate differentially expressed proteins (DEPs) during the adventitious rooting using iTRAQ technique and proteomics analysis. Out of the 5014 DEPs, 115 DEPs were considered as identified proteins, and among them, 24 DEPs are interesting proteins abundance.