Abstract: Seeds and seedlings of rice were treated with magnetized NaCl stress solution at different intensity in order to study the effects of magnetized intensity on seeds germination and seedling physiologic under NaCl stress.The results compared with contrast showed that germination percentage, germination index, germination potential of rice seeds and soluble sugar content of watermelon seedlings had been improved distinctly after treated with magnetized water of 0.05T,and the activity and content of POD enzymes had been enhanced when treated with different intensity;but had little effects on EST isoenzymes. The study indicated that germination of rice seed under NaCl stress and salinity tolerance salt of rice seedlings could be increased when treated with magnetic intensity at moderate degree