A method for expressing characteristic points of heart beat and expressing physiological state of the heart by using sequence diagram.Detect a physiological state of the heart to generate certain sequence data, and then convert the sequence data to sequence circle data, so that the absolute value is converted to a relative value, and RR interval variation is excluded from the feature point (heart beat cycle). The timing of the specific event within the time), the heart's physiological state is intuitively judged by the angle and radius of the sequence circle (1, the radius of the sequence circle indicates the speed of the heartbeat； 2, the large change in the radius of the sequence circle indicates that the individual's heartbeat is poor in regularity The probability of arrhythmia increases； 3, the sequence circle represents the timing of each characteristic point in the heart beat cycle through the angles relative to the R point, removing the misjudgment that the characteristic point occurrence time is expressed in absolute time).一種利用定序圖表示心搏動特徵點並表現心臟生理狀態之方法，其先偵測一心臟生理狀態而產生一定序線資料，再藉由定序線資料轉成定序圓資料，使絕對數值轉為相對數值，去除心率變化(RR interval variation)對於特徵點(心臟搏動週期內特定事件發生時間點)的影響，透過定序圓的角度與半徑直觀判斷心臟生理狀態(1、定序圓的半徑長度表示心跳快慢；2、定序圓半徑變化大表示個體之心跳規律性差，心律不整可能性增加；3、定序圓經由相對於R點之各夾角表示心臟搏動週期內各特徵點之時序，去除以絕對時間值表現特徵點發生時間的誤判)。
