[Objective] To clarify the distribution characteristics and laws of benggang in Shangyou County, and to provide data support and scientific basis for the priority decision-making of benggang governance by studying scientific research methods. [Methods] Shangyou County, Jiangxi Province was taken as the research area. Based on the comprehensive investigation of benggang and its hazard characteristics, according to the principle of " three elements " of benggang risk, the scale and development status of benggang were selected as the main risk potential indicators of the main body of benggang, and the hazard receptors such as houses, roads and farmland were selected, and combined with the hazard distance as the receptor degree index. The risk evaluation index system of benggang based on matrix discriminant method was constructed to explore the applicability and accuracy of matrix discrimination method to evaluate the benggang risk. [Results] There are 227 benggang in Shangyou County, of which 25 have been controlled and 202 have not been controlled. The development status is mostly active type, the scale is mostly large, the morphological type is mainly dipper type, the hazard object is mainly farmland, and the hazard distance is mainly less than 10 m. The ratio of the number of benggang in the five risk levels of no, small, medium, large, and great in the county to the number of benggang was 47.5 %, 14.9 %, 15.8 %, 14.9 %, and 6.9 %, respectively. The accuracy of on-site review verification reached 80 %.[Conclusion] The matrix discriminant method proposed in this study has good applicability and accuracy, and the indicators are easy to obtain and the method is easy to operate.