A smart wrist watch having an electrocardiogram monitoring function comprises a watchband (1) and a watch dial (2). An electrocardiogram monitoring apparatus (20) is disposed in the watch dial (2). An electrocardiogram measurement electrode (22) of the electrocardiogram monitoring apparatus (20) comprises a first measurement electrode (221), a second measurement electrode (222), and a third measurement electrode (223). The first measurement electrode (221) and the second measurement electrode (222) are disposed at two ends of a display screen (21) respectively. The third measurement electrode (223) is disposed on an opposite surface of the watch dial (2) and is in contact with the wrist of a user. During use, the watch dial (2) is fixed to the wrist of one hand of the user through the watchband (1), the third measurement electrode (223) is attached to the wrist artery, and two fingers of the other hand of the user are in contact with the first measurement electrode (221) and the second measurement electrode (222) respectively, such that the first measurement electrode (221), the second measurement electrode (222), and the third measurement electrode (223) form a measurement loop in a human body to collect an electrocardiogram signal of the human body. The wrist watch is simple and convenient to operate, and can reduce a measurement error caused by misoperation.Linvention concerne une montre-bracelet intelligente ayant une fonction de surveillance délectrocardiogramme, qui comprend un bracelet (1) et un cadran de montre (2). Un appareil de surveillance délectrocardiogramme (20) est disposé dans le cadran de montre (2). Une électrode de mesure délectrocardiogramme (22) de lappareil de surveillance délectrocardiogramme (20) comprend une première électrode de mesure (221), une deuxième électrode de mesure (222) et une troisième électrode de mesure (223). La première électrode de mesure (221) et la deuxième électrode de mesure (222) sont disposées au niveau de deux extré