The invention discloses a security enhanced data backup and recovery system. The system comprises a security basic platform, a managing control table, a communication module, a task managing module, a data backup module, a data recovery module and a backup assembly, wherein the managing control table is connected to the task managing module by means of the communication module, establishes a data backup or recovery task by the task managing module, and is connected to the backup assembly by means of the data backup module or data recovery module to perform data backup or recovery; the security basic platform is used to identify an identity of a system user, perform security management to a system account, perform security management on a user operation, perform security control on the data backup or recovery task, and perform security audit on the system, so as to achieve technical effects of reasonable design of the system, high security, ensured confidentiality of backup data, and security and controllability of the backup and recovery operation.