The invention relates to a disk access method for a double-control disk array, and belongs to the technical field of computer information storage. The method controls insertion and isolation of a disk from an operating system, thereby ensuring the consistency of the access state and the available state of the upper layer storage application, improving the security of the double-control disk array, avoiding the available management of a disk on the upper layer application, and reducing the complexity of a system and the accuracy of data; the consistency of the access information and the access state is also kept by using the primary and standby roles of two controllers of the double-control disk array; and the real-time consistency of the access information and the access state of the two controllers is further periodically maintained via a background monitoring management program.