An electronic device , comprising: a housing , arranged with a mounting cavity and a mounting hole connected to the mounting cavity; a key , disposed in the mounting hole and configured to be movable relative to the housing when the key is pressed; a circuit board , mounted in the mounting cavity; a trigger structure , electrically connected to the circuit board ; a detection electrode , disposed on a rear cover of the housing and exposed on a side of the rear cover ; and an elastic member comprising a first connection and a second connection connected to the first connection , wherein the first connection is electrically connected to the circuit board ; the second connection is abutted on the key ; the key , the first connection , the second connection are conductive to each other and to the circuit board ; the electronic device further comprises a biosensor electrically connected to and conductive to the key and the detection electrode ; the electronic device is capable of being worn on a body of a user, and the body of the user is in contact with the detection electrode when the electronic device is worn; the biosensor is configured to measure an electrocardiogram data of the user, when the key and the detection electrode are in contact with the body of the user; wherein when the key is pressed, the elastic member is capable of generating two levels of deformation; during a first level of deformation, the first connection is deformed relative to the housing , and the first connection approaches the trigger structure ; during a second level of deformation, the second connection is deformed relative to the first connection and switches from a state spaced apart from the trigger structure to a state in contact with the trigger structure . a housing , arranged with a mounting cavity and a mounting hole connected to the mounting cavity; a key , disposed in the mounting hole and configured to be movable relative to the housing when the key is pressed; a circuit board , mounted in the mounting cavity; a trigger structure , electrically connected to the circuit board ; a detection electrode , disposed on a rear cover of the housing and exposed on a side of the rear cover ; and an elastic member comprising a first connection and a second connection connected to the first connection , wherein the first connection is electrically connected to the circuit board ; the second connection is abutted on the key ; the key , the first connection , the second connection are conductive to each other and to the circuit board ; the electronic device further comprises a biosensor electrically connected to and conductive to the key and the detection electrode ; the electronic device is capable of being worn on a body of a user, and the body of the user is in contact with the detection electrode when the electronic device is worn; the biosensor is configured to measure an electrocardiogram data of the user, when the key and the detection electrode are in contact with the body of the user; wherein when the key is pressed, the elastic member is capable of generating two levels of deformation; during a first level of deformation, the first connection is deformed relative to the housing , and the first connection approaches the trigger structure ; during a second level of deformation, the second connection is deformed relative to the first connection and switches from a state spaced apart from the trigger structure to a state in contact with the trigger structure . <EOS>