Provided is an endoscope system (1) includes: a light source (53) that generates and emits pulsed light an endoscope device (2) having an image sensor (25) that captures images of an inside of a subject in accordance with a pulsed light generation timing and outputs an image signal a processing device (4) that controls the light source (53) and the endoscope device (2) and processes the image signal a microphone (3) that is connected to the processing device (4) in a wired manner and collects sound and a holding member (32) that fixedly holds the microphone (3) at a location separated from the subject, wherein the processing device (4) includes: a vibrational frequency detection unit (41) that detects vibrational frequency of first sound emitted by the subject from the sound collected by the microphone (3) and a light source controller (42a) that controls pulsed light generation processing of the light source (53) in accordance with the vibrational frequency of the first sound detected by the vibrational frequency detection unit (41).
