The invention relates to a file system management method and a file storage terminal thereof. The file storage terminal comprises an input unit, a display unit, a storage unit and a processing unit, wherein a file system is stored in the storage unit and at least comprises a file; the processing unit comprises a traversing module, a monitoring module and a difference module; the traversing module is used for traversing the whole file system stored in the storage unit and obtaining a storage directory tree corresponding to the file system, a root node of the directory tree corresponds to a folder in the file system, and a leaf node of the directory tree corresponds to a file in the file system; the monitoring module is used for monitoring if the node of the obtained storage directory tree obtained by the traversing module is changed; and the difference module is used for obtaining the latest information of the changed node monitored by the monitoring module, creating a corresponding relation between the latest information and the node and storing the corresponding relation and the latest information in the storage unit.