To improve response performance of a storage control device. A storage control device 1 connected to a host computer 2 includes: a communication unit 1A that receives a command, to which a priority is set, from the host computer; a command executing unit 1B that executes the command received from the communication unit according to the priority; a cache memory 1C that is used by the command executing unit; a cache controller 1E that manages slots of the cache memory; and a plurality of storage devices 1D(1) and 1D(2) that stores data used by the host computer. The cache controller sets the priority to a slot that stores target data of the command and controls the data stored in the slot according to the priority.