Abstract: The forest land area of soils from Xiuwu, Huixian, Jiyuan, Linying and Changge in where the yellow-leaf diseases of poplar outbreak in last year were collected. And, we studied on the effect of soil nutrient factors (i.e. Fe, Mn, Cu, Zn, P and so on) to yellow-leaf disease of poplar. The results indicated yellow-leaf disease of poplar would be severe occurrence if the content of available Fe was relative low in soil. But, it would be also severe occurrence even if the content of available Fe were high in some soil where the content of available P, Cu and Zn were relative high.