Pot culture experiment was conducted to study salt resistance and mechanisms of five wheat varieties.The mechanisms of salt resistance were set forth by means of determining and analyzing the water retention indexes such as wax content of leaf(WC),succulence index (SI) and relative water content of leaf (RWC),and membrane stability indexes such as electrolyte leakage value of leaf (ELV) and relative electrolyte leakage percentage of leaf(RELP).The results obtained showed that the salt-resistant wheat varieties were of relatively higher wax content,succulence index and relative water content while grown under saline condition,so they performed stronger ability to retent water and fight against salt injury.The strong ability of salt resistance of "Lumai No.19" and "Zhishen No.2" was relevant to their higher wax content in leaf,succulence index and relative water content.The situation was contrary for "Lumai No.23 ".The strong ability of salt resistance was also relevant to the higher stability of membrane tissue.Salt-resistant wheat varieties "Lumai No.19" and "Zhishen No.2" were of lower electrolyte leakage value of leaf and relative electrolyte leakage percentage and higher stability of membrane.