In order to find out the influence of salt stress on enzyme activity in the process of rice germination, six indicators such as germination detected germination percentage, amylase, superoxide dismutase, nitrate reductase, catalase and peroxidase were determined in the test of two hybrid rice in seven days of seed germination at four salt stress level. The results showed that change trends of two kinds of rice were the same, but a certain difference existed between varieties. The germination percentage, amylase and catalase activity decreased significantly with salt stress concentration increasing, and they increased as germination time proloned. Activity of superoxide dismutase, nitrate reductase and peroxidase of two kinds of rice changed greatly with germination time, but no significant differences were found in different stress groups.