An electronic apparatus and a method for temporarily storing data thereof, adapted to temporarily store the data downloaded from a remote apparatus, are provided. In the method, an access instruction to the remote apparatus is captured, and accordingly a file requested by the access instruction or metadata of all files and subfolders under a folder requested by the access instruction is downloaded and temporarily stored in a storage unit, in which a usage time of the temporarily stored file is recorded. When a specific condition is met, the usage time of all the temporarily stored files is checked and at least one file that is not accessed for the longest time is deleted accordingly. The folder having the deleted file is checked whether not to include data of any file, and accordingly the metadata of all the files and subfolders under the folder is deleted.