The present invention relates to a method which restores a capillary change value over time to a PPG by measuring a change of a capillary of a body acupuncture point which is a pulse part, expresses a relaxation phase and a contraction phase of a heart as a PPG index, analyzes a daily change amount of the obtained PPG index and calculates an ovulation date, a menstrual end date, pregnancy and a menstrual cycle of women. The method comprises the following steps of: extracting a first signal representing the change of the capillary of the pulse part from a first image; and reproducing the capillary change of a subject as the PPG represented by a graph over time from the first signal.COPYRIGHT KIPO 2018본 발명은 맥진부위인 신체 경혈부위의 모세혈관의 변화를 광 측정하여 시간에 따른 모세혈관 변화 값을 맥파(PPG)로 복원하고 심장의 이완기 및 수축기 주기를 맥파 지수(index)로 표현하며, 획득된 맥파 지수의 일간 변화량을 분석하여 여성의 배란일 여부, 생리종료일 여부, 임신여부, 월경 주기를 산출하는 방법에 관한 것이다.