Abstract: In this experiment,the character of seed germination and seedling growth of several cherry tomatoes under salanity stress was studied by petri dish culturing.in an attempt to provide detail informations for culture in sanility stress . The results showed:(1)With the increase of NaCl concertration ,the germination regularity and the rate of germination and seedling emergance were significantly decreased .The germination losing rate were significantly increased. (2) With the increase of NaCl concertration ,the seedling growth was significantly inhibited.The difference among different materials was great,Huangzhenzhu was the most sensitive , the next was Taiwanshengnv,the last was Yingtaohong. (3) With the increase of NaCl concertration ,the germination index(GI) and vigor index (VI) were significantly reduced, the change of GI and VI was Huangzhenzhu> Taiwanshengnv> Yingtaohong.