Abstract: Experiments shows that the wheat production yield in saline-Alkali field will be increased considerably by utilizing weathering coal properly. Utlizing weathwcathering coal can decrease the marsh content of soil, reduce density and swelling value, increase porosity of soil. Weathering coal could also improve the physical and chemical properties, promote micronial activities of soil. It could raise soil temperature, enhance the transformation of soil nuturients and create a good soil environment for crop growth as well. On the top of these, utilizing weathering coal properly in saline-Alkali field will straighten out the inviroment polution caused by piling up weathering coal in fields.