Inventory of large bulk cargo piles is one of the important tasks in material yard management. For this purpose，the article designs and implements a multi point bulk cargo pile laser inventory system based on two dimensional LiDAR，differential GPS，two-dimensional turntable，and attitude measurement device. During the fixed-point measurement process，the differential GPS records the position information of the system，and the two dimensional turntable rotates to drive the laser radar to scan the surface data of the stack. At the same time，the attitude measurement device synchronously records the real-time attitude of the system. Finally，the measurement data from each fixed point are fused to generate a point cloud model of the stack，and the volume of the stack is calculated using the triangulation volume algorithm. The actual measurement results show that the system can complete the measurement of a 69 m3 bulk cargo stack within 5 minutes，with an average measurement error of less than 1.18%，fully meeting the needs of practical industrial applications.