Smart watch and electrocardiogram monitoring method

The invention relates to a smart watch and an electrocardiogram monitoring method. Two electrocardiogram electrodes in the smart watch extend to the two ends of a watchband; the intelligent watch has two use forms, namely a watch wearing form and an electrocardiogram monitoring form. In the watch wearing state, after the electrophysiological data and the air temperature data which are collected in real time are input into the heart rhythm state prediction model, a heart rhythm state prediction result is obtained, and when the heart rhythm state prediction result shows that arrhythmia exists, a prompt of switching to the electrocardiogram monitoring state is sent out; in the electrocardiogram monitoring state, electrocardiogram monitoring is carried out through the electrocardiogram electrodes at the two ends of the watchband, and an electrocardiogram monitoring result is obtained. The intelligent health watch and the electrocardiogram wearable device are combined, the user can be reminded to adopt the electro