Point cloud positioning debugging method and system

A point cloud positioning debugging method comprises the following steps: obtaining a plurality of first point data and a target point cloud map comprising a plurality of target point data, and registering the plurality of first point data and the plurality of target point data to obtain a plurality of second point data, screening out a plurality of pieces of third point data from the plurality of pieces of second point data according to a first preset distance, calculating a plurality of matching scores of the plurality of pieces of third point data relative to the plurality of pieces of target point data, and obtaining a plurality of step vectors respectively corresponding to the plurality of pieces of third point data during registration convergence, and obtaining a plurality of effective values according to the directions of the plurality of step vectors, and outputting a positioning debugging result corresponding to the plurality of third point data based on an intersection of the plurality of matching s