Abstract: The interactive effects of drought stress (70, 50 and 30% field capacity) and salicylic acid (0.6 mM) were studied in soybean (Glycine max L.) plants. The content of pectin, cellulose, lignin and phospholipids of either shoots or roots and soluble sugars of shoots were significantly lowered with the rise of drought levels. On the other hand, the contents of hemicellulose, starch, total lipids, glycolipids and sterols of either shoots or roots, soluble sugars of roots were raised. It was found that application of salicylic acid enhanced pectin, cellulose, lignin and phospholipids contents of either shoots or roots and soluble sugars of roots. On the other side, the applied salicylic acid lowered hemicellulose, starch, total lipids, glycolipids and sterols of shoots and roots and soluble sugars of shoots. Soaking of soybean seeds in salicylic acid exhibited a favorable effect on the accumulation of some ions and antagonized or ameliorated the inhibitory effect of drought stress on some others.