Remote Storage System and Method Using Network Attached Storage (NAS) Device

A remote storage system and method using an NAS device is provided, which enable a terminal device to upload or download storage information on the NAS device through a network. The remote storage system using the NAS device comprises: an NAS device configured to store first information uploaded by a terminal device or store second information to be downloaded by the terminal device, the first information and the second information being called storage information; a first component connected between the terminal device and the NAS device, and configured to forward the storage information; and a second component connected to the first component and configured to store user information corresponding to the NAS device, and allocates, to the NAS device according to the user information, an account and a domain name address that are used for forwarding the storage information.