The invention provides an electrocardiogram electrode positioning aid, which comprises: an image processing module, which generates a standard plurality of electrode positions for indicating a correct electrocardiographic measurement position on a human body image； and an image display module. Simultaneously displaying the human body image and the standard plurality of electrode positions and displaying only the standard plurality of electrode positions, for at least one user to configure at least one electrocardiogram measurement on the subject according to the standard plurality of electrode positions And measuring the electrocardiogram； wherein the human body image has a fixed ratio with the standard plurality of electrode positions, and the human body image and the standard plurality of electrode positions are scalable. In this way, the general public who has not received professional medical training can find the correct position of the electrode for measuring the electrocardiogram in a short time, and it is easy to repeatedly reproduce the correct position, thereby achieving the purpose of improving medical efficiency and reducing misjudgment. The present invention includes a method of locating an electrocardiographic patch position by means of an accessory.本發明提供一種心電圖電極定位輔具，係包括：一影像處理模組，係產生標準複數電極位置，用以標示一人體特徵圖像上的正確心電圖量測位置；一影像顯示模組，係用以同時顯示該人體特徵圖像與該標準複數電極位置以及僅顯示該標準複數電極位置之其中一者，供至少一使用者依據該標準複數電極位置，於待測者身上配置至少一心電圖量測電極，並進行心電圖量測；其中，該人體特徵圖像與該標準複數電極位置具有一固定比例，且該人體特徵圖像與該標準複數電極位置係可進行縮放。藉此，可以讓未受過專業醫療訓練的一般大眾在短時間之內找到放置量測心電圖之電極的正確位置，且容易重複再現正確位置，因此可達到提高醫療效率且減少誤判之目的。本發明復包括藉助輔具定位心電圖貼片位置的方法。
