Abstract: A hot-standby redundancy control system is disclosed. In an embodiment, the system includes multiple primary control apparatuses, each respectively running a process of the hot-standby redundancy control system; a backup control apparatus pool including at least one industrial personal computer (IPC), with multiple virtual control apparatuses being established on at least one IPC, and the multiple virtual control apparatuses established being in one-to-one correspondence with the multiple primary control apparatuses, and each respective multiple virtual control apparatus running a same process as a respective corresponding primary control apparatus; a control bus, to connect one or more of the t least one IPC in the multiple primary control apparatuses and the backup control apparatus pool; and a field bus, to connect one or more of the at least one IPC in the multiple primary control apparatuses and the backup control apparatus pool and multiple field apparatuses.