A memory control method and device, the method comprising: a memory control device (600) receives a control policy for a physical memory and a corresponding triggering condition (S101), the triggering condition comprising a change in state information of the physical memory and/or an access process received by the memory control device (600); the memory control device (600) monitors the state information of the physical memory and the access process (S102); when the triggering condition is satisfied, the memory control device (600) invokes the corresponding control policy to control the physical memory (S103). Therefore, the memory control device (600) serving as hardware acquires from a system the necessary control policy, physical memory control semantic information required for carrying out the control policy, and the triggering condition of the corresponding control measurement, such that when the triggering condition is satisfied, the memory control device (600) can invoke the control policy corresponding to the triggering condition to control the physical memory without a system raising a page fault in the control process, thus improving control efficiency.