The salt tolerance of 38 rice strains were studied in water,0.25% and 0.5% NaCl solution.By correlation analysis found 6 principal components,that is the factor of length of bud,the factor of dry weight,the factor of length of root,the factor of sensitivity of bud,the factor of sensitivity of fresh weight,the factor of fresh weight in low salt concentration.Eight good rice strains with salt tolerance,i.e.Dianyu 3A,Kyongsan 2,Talsung 18,Kwangyang7 1,Keng Chi Ju,Thou Bir,Ma Gu Tsaw ,Tie Gau Tsan.