An endoscope system includes: a first light source that emits first light a first light guide that guides the first light received from the first light source toward a subject a second light source that emits second light having a different wavelength region from the first light a second light guide that guides the second light received from the second light source toward the subject and a blocker that alternatingly blocks the first light traveling from the first light source toward the first light guide and the second light traveling from the second light source toward the second light guide.
