A blood pressure calibration period determining method, comprising: obtaining, by a blood pressure measurement device, first physiological status information and second physiological status information of a tested person, wherein the first physiological status information is related information that causes a change in blood pressure of the tested person within a first time period after the blood pressure is calibrated, and the second physiological status information is related information that causes a change in the blood pressure of the tested person within a second time period before the blood pressure is calibrated; and determining, by the blood pressure measurement device, a blood pressure calibration period based on a change degree of the first physiological status information relative to the second physiological status information, wherein the related information comprises exercise information which comprises at least one of the following information: exercise intensity, exercise duration, or an exercise regularity, wherein obtaining, by the blood pressure measurement device, the exercise information of the tested person comprises: determining, by the blood pressure measurement device, the exercise information based on information output by an acceleration sensor and/or a gyro sensor that are/is disposed on the blood pressure measurement device, and the blood pressure measurement device further includes a communications module, so that the blood pressure measurement device communicates bidirectionally with one or more other electronic apparatuses or servers, the communications module supports a near field communications protocol, or near field communication, or a communications protocol used by a network. obtaining, by a blood pressure measurement device, first physiological status information and second physiological status information of a tested person, wherein the first physiological status information is related information that causes a change in blood pressure of the tested person within a first time period after the blood pressure is calibrated, and the second physiological status information is related information that causes a change in the blood pressure of the tested person within a second time period before the blood pressure is calibrated; and determining, by the blood pressure measurement device, a blood pressure calibration period based on a change degree of the first physiological status information relative to the second physiological status information, wherein the related information comprises exercise information which comprises at least one of the following information: exercise intensity, exercise duration, or an exercise regularity, wherein obtaining, by the blood pressure measurement device, the exercise information of the tested person comprises: determining, by the blood pressure measurement device, the exercise information based on information output by an acceleration sensor and/or a gyro sensor that are/is disposed on the blood pressure measurement device, and the blood pressure measurement device further includes a communications module, so that the blood pressure measurement device communicates bidirectionally with one or more other electronic apparatuses or servers, the communications module supports a near field communications protocol, or near field communication, or a communications protocol used by a network. determining, by the blood pressure measurement device, the exercise information based on information output by an acceleration sensor and/or a gyro sensor that are/is disposed on the blood pressure measurement device, and the blood pressure measurement device further includes a communications module, so that the blood pressure measurement device communicates bidirectionally with one or more other electronic apparatuses or servers, the communications module supports a near field communications protocol, or near field communication, or a communications protocol used by a network.