A blood pressure measurement method, a blood pressure measurement device, and a storage medium are provided. The method includes: acquiring a video of a part of a human body, and generating a PPGi signal based on the video; extracting feature information from the PPGi signal; fitting blood pressure models based on the feature information, and acquiring blood pressure data corresponding to each heartbeat, wherein the blood pressure models include a systolic blood pressure linear model and a diastolic blood pressure exponential model.