An electronic sphygmomanometer measuring method, comprising: acquiring a barometric pressure sequence (S110); obtaining a systolic pressure/diastolic pressure on the basis of the barometric pressure sequence (S120); extracting characteristic information of the barometric pressure sequence (S130); and correcting the systolic pressure/diastolic pressure on the basis of the characteristic information (S140). The measuring method increases the precision in calculating the systolic pressure/diastolic pressure. Also disclosed accordingly are an electronic sphygmomanometric system, an electronic sphygmomanometer, and a storage medium.