Abstract: In order to provide theoretical basis for high yield and high quality maize production in the corn belt of Yuanping city, Shanxi province, the concentrations of soil trace elements and the relationship between organic matter, pH and soil trace elements content was studied. According to the study area in corn planting regionalization, the surface soil samples（0~20 cm）were collected to determine the contents of soil pH, organic matter and trace elements Cu, Zn, Ni, Fe, Mn, Se and Ca. And the relationship between total concentrations of soil trace elements with organic matter and pH were analyzed by using Pearson correlation analysis and one-dimensional linear regression. The results showed that the concentration of organic matter was 4.10 to 53.98 g/kg, the average value of organic matter was 17.29 mg/kg;The pH was 7.50 to 8.66, the average value of pH was 8.08, indicating that the content of soil organic matter in the study area is at a medium and low level. The average contents of Cu,Zn,Ni, Fe, Mn, Se and Ca were 20.61 mg/kg, 68.47 mg/kg, 33.30 mg/kg, 2.92%, 578.13 mg/kg, 0.28 mg/kg and 4.07%, respectively. The average values of the total Zn, Ni, Mn and Se were higher than the background value in Shanxi province. while the average values of the total Cu, Fe and Ca were lower than the back ground value in Shanxi province. The contents of Cu, Zn and Se were negatively correlated with pH（P<0.01）, the contents of Fe were negatively correlated with pH（P<0.05）, and the contents of Ca were positively correlated with pH（P<0.01）; The contents of Zn were positively correlated with organic mater（P<0.01）, the contents of Cu and Se were positively correlated with organic mater（P<0.05）, and the contents of Ca were negatively correlated with organic mater（P<0.01）.

Key words: corn planting area, soil, trace elements, organic matter, pH, Yuanping city