Embodiments of the invention provide a method, a device, and a system for arbitration of a double-active data center, and relates to the technical field of computers. The arbitration method comprises: when communication between a first data center and a second data center is determined to be disconnected, and an arbitration device cannot arbitrate, the first data center checking a preset arbitration strategy; when according to the arbitration strategy, the first data center is determined to be a priority data center, continuing to provide service; when according to the arbitration strategy, the first data center is determined not to be the priority data center, stopping to provide service; wherein the first data center and the second data center are double-active data centers. Through the above scheme, when the communication between the first data center and the second data center is determined to be disconnected, and the arbitration device cannot arbitrate, just the priority data center continues to provide service, so that a problem of service interrupt caused by faults of the arbitration device is solved, and uninterrupted service is ensured to be provided for users.