Abstract: Based on the analysis of collaborative samples of soil and crops in 539 sampling sites in Yunnan province,comprehensive index combined soil environmental quality and agricultural products quality was applied to evaluate the environmental quality of farmland soil. The results showed that the content of cadmium and arsenic in paddy soil was lower than that of dry land. Among the 539 points,clean points accounted for 41. 4%,slightly polluted points 26. 0%,lightly polluted points 13. 9%,moderately polluted points 8. 0%,and heavily polluted points 10. 8%.