The invention provides a massive point cloud filtering method based on cloud calculating. The method processes the massive point cloud data through a cloud platform constructed by a plurality of computers to realize the filtering of point cloud data. The method comprises the following steps: 1) reading the massive point clouds; 2) obtaining virtualized hardware resources from a scheduling cloud platform; 3) classifying the inputted point clouds; 4) distributing each classified small block of the point clouds to different computers or the different threads of a computer; using an improved morphological filtering method to filter it; and 5) combining and processing the result and returning the result to the client terminal. Compared with the existing processing mode based on stand-alone processing, the present invention provides a massive point cloud filtering method based on cloud calculating, which utilizes the cloud computing cluster constructed by multiple computers to divide a task into a series of small tasks that are calculated by different computers. In this way, the filtering efficiency of the massive point clouds can be significantly increased and the performance bottleneck of stand-alone serial processing can be overcome.