An electronic device is disclosed. The electronic device includes a wireless module configured to emit a first radar signal and receive a second radar signal, which is the first radar signal reflected by a user； a gravity sensor configured to sense a status of the electronic device to generate a sensing result； and a control unit coupled to the wireless module and the gravity sensor, and configured to control the wireless module to emit the first radar signal when the sensing result conforms to an emitting condition and determine a physiological status of the user according to the second radar signal received by the wireless module.
