Mobile hard disk multi-security-level interaction method and system

The invention relates to the technical field of mobile hard disk multi-security-level interaction, and discloses a mobile hard disk multi-security-level interaction system which comprises an interaction communication module embedded in a mobile hard disk chip, and a mobile hard disk interaction application program on the interaction communication module runs on a computer terminal; the mobile hard disk interaction application program comprises a security control module used for managing controlled access permissions of computer terminals with different security levels, a key management module used for managing keys of operation users, and a permission verification module used for verifying the operation permissions of the operation users. When an operation user requests to set the controlled access strategy of the mobile hard disk on the security control module, the permission verification module verifies the operation permission of the permission verification module, and only if the verification succeeds, th