The invention discloses a key device with a heart rate detection function and electronic equipment. The key device comprises a cover plate, a frame, a pressure sensor and a signal processing unit, wherein the signal processing unit is used for processing pressure sensor signals, and the pressure sensor is connected with the signal processing unit. The electronic equipment is provided with the key device. The heart rate measuring function can be effectively integrated to a key of the portable electronic equipment, so that heart rate measurement compatible with the original structure of the electronic equipment and the operating habit of a user is realized, and the overall cost and the power consumption are reduced simultaneously.