According to the present disclosure, it is possible to smoothly proceed with an examination in which an audio input and audio recognition are performed on medical images. In the endoscope system, a processor acquires a plurality of medical images by causing an image sensor to image a subject in chronological order, accepts an input of an audio input trigger during capturing of the plurality of medical images, sets, in a case where the audio input trigger is input, an audio recognition dictionary according to the audio input trigger, performs, in a case where the audio recognition dictionary is set, audio recognition on audio input to the audio input device after the setting, using the set audio recognition dictionary, and displays item information indicating an item to be recognized using the audio recognition dictionary, and a result of audio recognition corresponding to the item information, on a display device.