Some of the most  important  results we came to in this study are, the clarity of the impact of drought stress on the amino acids content in the plant stem , and this will be increased by rising drought stress. It was also found that there is a role for amino acids in osmotic adjustment, and in the end it was concluded the role of the Chitosan and its obvious impact in the increase of the total amino acids. As well as the impact of Proline on the plants leaves where its concentration raised in the plants groups treated with Chitosan compared to the untreated plants groups, and the reason for this is that Chitosan is working to raise the concentration of the amino acid in some of those plants.