Abstract: Farmland is the main production base of agricultural and sideline products. The quality of farmland soil not only determines the quality and yield of agricultural products, but also has an important impact on the health of residents. Based on the analysis of farmland soil heavy metal pollution sources in Xingtai area, this study uses comprehensive index evaluation method to establish farmland soil heavy metal pollution evaluation model in Xingtai area, uses entropy method to determine the weight of the evaluation model, and analyzes the degree of farmland soil heavy metal pollution in the study area. Based on this, the optimal plan for the treatment of heavy metal pollution in farmland soil in Xingtai area is drawn.