Memory access control method and device

The invention discloses a memory access control method and a memory access control device, which are used for realizing memory partition isolation, reducing software overhead and reducing memory isolation granularity. The method comprises the following steps: configuring a memory label for at least one memory domain; before any memory domain in the at least one memory domain, such as the first memory domain, is operated, if the first memory domain is configured with a memory label, releasing the memory label of the first memory domain; and after determining that the first memory domain does not have the memory label, running the first memory domain. According to the scheme, the application program is subjected to non-invasive modification, program codes do not need to be recompiled, the size of the application program does not need to be increased, and the implementation cost can be reduced; compared with other memory isolation schemes realized through software or hardware, the performance overhead can be red