An endoscope system includes: an endoscope including an image pickup device; an EEPROM provided in the endoscope, and configured to hold data according to a kind of the image pickup device; a video processor to which the endoscope is attachably and detachably connected; a control portion provided in the video processor, and configured to acquire the data from the EEPROM when the endoscope is connected to the video processor and set processing content of noise reduction processing, based on the acquired data; and an NR processing circuit provided in the video processor, and configured to execute the noise reduction processing on a video signal outputted from the image pickup device, based on setting of the control portion. The control portion sets execution/non-execution of the noise reduction processing to the NR processing circuit, based on the acquired data.