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Abstract The commonly grown eggplant（Solanum melongena L.）cultivar‘Xi’anlvqie’ was used as scion. It was grafted with eggplant rootstock（Solanum torvum）. Growth and physiology of grafted eggplants and self-rooted eggplants under 5 different concentrations of NaCl solutions（0, 200, 400, 600, 800 mmol•L-1）were assayed. Results showed that salt injury index to grafted eggplants declined 29.09-45.45 than self-rooted control. The plant height, stem diameter, fresh weight of aboveground, fresh weight of root, the chlorophyll content, proline content（Pro）, root activity, peroxidase（POD）activity, polyphenoloxidase（PPO）activity and phenylalanine ammonia-lyase（PAL）activity of grafted eggplants were higher than self-rooted control 6.63 %-11.52 %, 8.05 %-55.34 %, 13.97 %-45.29 %, 30.91 %-97.35 %, 113 %-265 %, 73 %-136 %, 173 %-386 %, 27.12 %-86.32 %, 44.80 %-250.00 %, 22.65 %-41.33 %, respectively. Malondialdehyde（MDA）content and relative conductivity were lower comparing with control 37.89 %-81.94 % and 26.12 %-54.55 %. Therefore, eggplant resistance under NaCl will be improved by grafting.
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