An endoscope system includes processors 12A and 12B, and settings in the processors are at least partially in common. And a setting content in a processor 12A determined to have a higher priority is transmitted to a processor 12B determined to have a lower priority (S3), based on a predetermined operation (S1), and the processor 12B changes a setting content that is in common with a setting content in the processor 12B among the received setting contents of the processor 12A (S5).
