The invention provides a point-cloud displaying method and point-cloud displaying equipment and belongs to the technical field of displaying. The method comprises the following steps: loading a point-cloud file, analyzing the point-cloud file, and obtaining point-cloud data; dividing the point-cloud data into multiple data blocks with the same size according to a preset number, calculating the size of each of the data blocks by each of the data blocks according to the nature of each of the data blocks, combining the data blocks into a data chain list, wherein the number of the data blocks selected from the data chain list can just meet the requirement of a storage space, and displaying the data. When storing the new number of the data blocks, the data blocks existing in the storage space needs to be cleaned, so that the data of the new number of the data blocks are displayed. Through the process, a lot of point-cloud data can be sequentially and reasonably stored into the storage space, so that the stability and the high-efficiency of software is improved; meanwhile, the storage space can be effectively and reasonably utilized and the possibility of the occurrence of software crashing is reduced.