The invention provides an alternating current and direct-current oil pump switching system with a lubricating oil system capable of considering dual redundancy. On the basis of the existing total electric pump scheme, a key element adopts the redundancy configuration, a local pressure control chain loop is added, and one pressure signal is output to the local control loop. At the same time, a "unit operation" signal and a "unit stop" signal are added in the local pressure control chain loop and a self-holding loop is adopted to ensure the direct-current oil pump is able to be stopped in a longway. The problem that the existing alternating current and direct-current oil pump switching schemes is not able to be switched normally under the condition of DCS failure is overcome. The alternating current and direct-current oil pump is safe and reliable in switching, and convenient to operate and maintain.