Embodiments of this application disclose an incoming call notification system and an electronic device, and relate to the communication field. The incoming call notification system includes a first device and a second device, and there are one or more first devices. The second device is configured to receive an incoming call request. When a third device that meets a first preset condition exists in the first device, the third device is configured to: respond to the incoming call request, and give an incoming call notification in an incoming call notification manner preset in the third device. When the third device exists in the first device and the second device, a fourth device that does not meet the first preset condition in the first device is configured to give an incoming call notification in a mute mode.