Abstract: In order to determine the source and cause of soil magnetic substances, a detailed magnetic study was conducted in the four different urban greenbelts in Zhangzhou City. The results showed that the average value of magnetic susceptibility was 302.77×10^-8 m³/kg, and the χ_fdwas 1.45%. The magnetic susceptibility decreased in the order of residential greenbelt > road greenbelt > accessory greenbelt > park greenbelt. Based on analysis of the χ_fd, SP was found to exist in the soil of the park greenbelt. Analysis of the individual sampling points showed that magnetic susceptibility was strongly and negatively correlated with frequency dependent susceptibility, and there was a significant positive correlation between SIRM and the Soft IRM. However, the correlation between SIRM and the Hard IRM was very weak. These results indicate that the magnetic susceptibility was mainly controlled by ferrimagnetic minerals, with some antiferromagnets also contributing. The enhancement of magnetic susceptibility was correlated with vehicle exhaust, industrial discharge and other human activities.