A virtual resource management method, system, and apparatus are applied in the field of communications technologies. The virtual resource management method includes running an input/output I/O domain on a remote node, if the remote node needs to enter a sleep state, obtaining information of a processor core occupied by running the input/output I/O domain on the remote node; stopping running the I/O domain if the remote node is in the sleep state; and sorting, according to the obtained information of the processor core, a resource of a corresponding processor core to a virtual resource pool, so that the processor core can be used to perform service processing, thereby implementing virtual resource management.