The invention discloses a mobile phone personal information security management method, comprising the following steps: determining an encrypted file type and an unencrypted file type of files in a mobile phone, and carrying out special processing for the encrypted files; determining whether the mobile phone password is cracked, if cracked, making a cloud backup for the encrypted files, and simultaneously sending the information that the mobile phone is cracked to a backup mobile phone, and deleting the files with a cloud backup, if not cracked, sending the information that the mobile phone is not cracked to the backup mobile phone. According to the mobile phone personal information security management method disclosed by the invention, whether the mobile phone password is cracked is judged, the encrypted files are provided with the cloud backup, and the backup files are deleted after notifying the information that the mobile phone is cracked, and thus the phenomenon that the file data cannot be lost when the mobile phone is stolen can be ensured.