A device remote access method includes receiving, by a bus filter driver on a thin client (TC) side, a request for remote access by a virtual machine (VM) side to a physical device on the TC side, converting, by the bus filter driver, the request for remote access into a remote operation instruction that may be read by a physical device driver, and sending, by the bus filter driver, the remote operation instruction to the physical device driver, where the remote operation instruction is used to instruct the physical device driver to drive the physical device to execute a read/write operation and return remote response data that carries an execution result of the read/write operation which implements remote access by the VM side to the physical device on the TC side, and because a device driver is not modified, the TC side may continue to normally access the physical device.