HEART RATE MEASUREMENT METHOD AND APPARATUS

Embodiments of this application disclose a heart rate monitoring method and apparatus. A harmonic weight value is calculated according to a PPG signal, the harmonic weight value is then used to determine a confidence of a heart rate, and a heart rate value is output only when the confidence is high, so that the accuracy of the heart rate output value can be ensured, and the user experience can be improved. The method is applied to an electronic device (such as a smart watch). The method includes: determining that a wearer of the electronic device is a living body; obtaining a first PPG signal; determining a first heart rate and a confidence of the first heart rate according to the first PPG signal, where the confidence of the first heart rate is determined by weight coefficients of M harmonic signals, where the M harmonic signals are determined according to the first PPG signal within a preset time, and M is an integer greater than or equal to 2; outputting the first heart rate in a case that the confidence of the first heart rate meets a preset confidence condition; and displaying the first heart rate.