An electrocardiography detecting method applies in an electrocardiography detecting device. The electrocardiography detecting device has two electrodes which separately contact human left and right hands to get a heart electric signal, a signal amplifier which electronically couples to the said electrodes and properly amplifies the heart electric signals that the said electrodes get and generates an electrocardiography signal according to the amplified heart electric signals, and a signal processor which electronically couples to the signal amplifier and accepts the electrocardiography signal. The Method lets the signal processor get a baseline value, a maximum value and a minimum of the electrocardiography signal according to the electrocardiography signal, and when the signal processor determines the value of the maximum value subtracts the baseline value larger than the value of the minimum value subtracts the baseline value, it gets the electrocardiography signal, or it executes a corresponding step for getting correct electrocardiography signal.一種心電圖量測方法,應用於一心電圖量測裝置,該心電圖量測裝置具有兩個分別用以接觸人體左、右手以取得一心臟電氣訊號的電極、一與該兩個電極電耦接,以適當放大該兩個電極取得的該心臟電氣訊號並據以產生一心電圖訊號的訊號放大器,以及一與該訊號放大器電耦接,以接收該心電圖訊號的訊號處理器,該方法令該訊號處理器根據該心電圖訊號,求得該心電圖訊號的一基準線值、一極大值及一極小值,並判斷該極大值減去該基準線值大於該基準線值減去該極小值時,取得該心電圖訊號,否則執行一相對應措施,以獲取正確的心電圖訊號。S1~S6‧‧‧步驟
