A computer-based method for managing files includes: configuring an access control list which illustrates all the accessible rights to corresponding users, the accessible rights comprise the right for comparing selected files, the right for merging selected files and the right for dividing a selected file; saving created files in a file transfer protocol (FTP) server, and saving file information of the files in a database, the file information including a file path of each of the files; reading from the FTP server selected files that need to be compared according to respective file paths if a files comparing request is received, comparing the selected files, and outputting differences between the selected files; reading from the FTP server selected files that need to be merged according to respective file paths if a files merging request is received, merging the selected files to create a merged file, and saving information of the merged file in the database; reading from the FTP server a selected file that needs to be divided according to a corresponding file path and a file position of the file, if a file dividing request is received, dividing the selected file into two files at the file position, and saving information of two divided files in the database. A related system is also disclosed.