Abstract: Fractal theory is applied to study the combination relations with chemical elements' enrichment in the soil of the testing area in the article, and then the data are dealt with by adopting the arithmetic of multi-fractals so as to draw a trend line to show how the elements are distributed in the soil. As a result the intergrowth combination of the elements is determined. Thus it provided a good basis on which more work can be done to expose; control and evaluate elements' abnormality in the area. Compared with the traditional methods, this method can work quite well in this research.