Electrocardiogram electrode device

The utility model provides an electrocardiogram electrode device, and relates to the technical field of medical instruments. The electrocardiogram electrode device comprises an electrode suction ball, and the electrode suction ball comprises a suction ball body and a suction cup body. The suction ball body comprises an inner-layer leather bag and an outer-layer leather bag, and the inner-layer leather bag and the outer-layer leather bag are matched with each other to form a middle cavity used for containing conductive liquid. The suction cup body is connected with the suction ball body, a guide pipe communicated with the middle cavity is arranged on the inner wall of the suction cup body, and a pressure valve is further arranged at the joint of the suction cup body and the suction ball body. According to the electrocardiogram electrode device, by arranging the guide pipe and the middle cavity which are in fluid communication and through the pressure valve, when the suction ball body is pressed, spraying of co