PURPOSE: An automatic blood pressure monitor for measuring artery and outputting blood pressure values only at the moment when the QRS-complex of ECG occur is provided to detect stably signals measuring ECG, thereby being used for an exercise tolerance tester and a disease patient-dedicated tester. CONSTITUTION: An automatic blood pressure monitor measures electrocardiogram (ECG) (S110). The automatic blood pressure monitor detects a specific waveform from the measured ECG. The automatic blood pressure monitor extracts initial and end points of QRS-complex (S120). The automatic blood pressure monitor measures blood vessel energy information at an interval between the initial and end points of the QRS-complex (S130). The automatic blood pressure monitor outputs blood pressure information based on the blood vessel energy information (S140). [Reference numerals] (AA) Start； (BB) End； (S110) Step where an electrocardiogram is read； (S120) Step where initial and end points of a QRS-complex are extracted； (S130) Step where the amount of energy of a blood vessel is measured； (S140) Step where information about the blood vessel is calculated자동 혈압 측정 방법 및 장치가 제공된다. 자동 혈압 측정 방법은, ECG를 측정하는 단계, ECG로부터 QRS파의 시작 지점과 종료 지점을 추출하는 단계, QRS파의 시작 지점과 종료 지점 사이의 간격에서 혈관 에너지 정보를 측정하는 단계, 상기 혈관 에너지 정보에 기초하여 혈압 관련 정보를 산출하는 단계를 포함한다.
