The effects of four different amendments on the physicochemical properties of salinealkali soil and the growth of maize seedlings were studied by pot experiments. The results showed that, after being treated with the four amendments, pH and watersoluble salt content of the soil were significantly reduced. In contrast, the contents of soil organic matter, available phosphorus, available potassium and alkalihydrolyzable nitrogen increased. The contents of CO32-，HCO3-，Ca2+，Cl-and Na+ in the soil decreased, and the contents of Mg2+ and K+ increased. The SO42- content changed little. After comprehensive analysis, the effect of G3was the best.