The effect of grass and spring wheat (Triticum aestivum)on the content and composition of soluble salt was studied by field experiment. The results showed that the desalination of grasses was better than spring wheat . The salt content within 20 cm was reduced by 16.2%, 28.9%, 18.5% and 45.1% respecuively through sowing Triticum aestivum, Pisum sativum, Onobrychis viciaefolia and Vicia villosa . The reason resulting in the difference was the different coverage among different crops. The contents of SO_(4)~(...