According to the engineering geological analysis, there was the possibility of sliding failure on the recommended slope of Beipanjiang Bridge after applying the engineering load. To judge the stability of the Anlong bank slope, FLAC^3D software and slope stability analysis software slide.v6007, Phase2 V9.0 were used to analyze the two-dimensional and three-dimensional stability of the Anlong bank slope, respectively. The calculation and analysis show that the safety factor of Anlong bank slope stability calculation is greater than the design standard of safety factor. From the theoretical analysis, the slope is in a stable state with a certain safety margin. Compared with the calculated safety factor of two-dimensional analysis, the calculated safety factor of three-dimensional analysis was larger. The stability analysis conclusion of the Anlong bank slope provided a reasonable basis for the preliminary design of the recommended position of Beipanjiang bridge.