The invention provides a memory and statistics system and method based on high-performance computing and belongs to the field of information technologies. The system comprises a path search module, a scheduling module, a memory space computing module and an information computing module, wherein the path search module scans in an appointed memory, searches as deep as the third layer of a directory tree, retrieves the absolute paths of all files and directories on the third layer and records the absolute paths in a destination file; after scanning is finished, the destination file is averagely divided into N parts to form N subfiles; the subfiles are scheduled to computing nodes by the scheduling module; on each computing node, the sizes of memory spaces occupied by the files corresponding to the absolute paths are computed by the memory space computing module according to the absolute paths provided in the subfiles; on each computing node, the detailed information of the files corresponding to the absolute paths is computed by the information computing module according to the absolute paths provided in the subfiles.