A blood pressure measurement method and a blood pressure measurement device using the same are provided. The method includes identifying an input value; if the input value is larger than 2, performing, by a blood pressure detector, N times of blood pressure measurement operation sequentially according to the input value, so as to obtain N blood pressure detection values, wherein a value of N is equal to the input value; sorting, according to the size of the N blood pressure detection values, the N blood pressure detection values to obtain N sorted blood detection values, and selecting one or more target sorted blood detection values which is ordered in the middle of the N sorted blood pressure detection values, so as to obtain a blood pressure measurement result value; and outputting, by an output unit, the blood pressure measurement result value.