In order to study the impacts of the local scour on the lateral bearing behavior of the partially embedded single piles, the software ABAQUS is used to simulate the response of a laterally loaded single pile. According to the application to engineering practices, a 3D finite element analytical model for the partially embedded piles under the conditions of lateral loads is established in this study. The validity of the numerical model is demonstrated by comparing the numerical results with the field experimental results. After then, some numerical examples are selected to investigate the influences of the scour slope, scour depth combined with pile diameter, constraint conditions at the pile head and the free length of piles on the lateral bearing behavior of the partially embedded piles. The analysis results show that the local scour depth has more significant influence than scour slope on the lateral bearing behavior. In addition, the scour conditions also have greater impacts on the lateral bearing capacity of the larger diameter piles, the increase in the free length of piles will result in the decrease in their lateral bearing capacity, and the constraint conditions at the pile head should be considered in the analysis of the impacts of scouring on the lateral bearing behavior of the pile foundations.