Abstract: In order to study the soil pollution assessment of heavy mental in Tongguan, sampling and analysis the content of the 4 kinds of heavy mental in surface sediments, and using the single factor pollution index and Comprehensive pollution index to evaluate it. The results showed that, Pb single factor pollution index was 4.69, pollution was serious; Sr, Cu was 2.23 and 2.77, achieve the moderate pollution; Zr was 0.78 lower levels of contamination. It was 3.61 of comprehensive pollution index, pollution was serious. Thus, appropriate measures should be adopted to strengthen the prevention and control of pollution in the region and avoid the harm to human health.