Electrocardiogram lead electrode for animal experiment

An electrocardiogram lead electrode for an animal experiment comprises an electrode needle and a connecting piece arranged at the large end of the electrode needle and used for being connected with an electrocardiogram machine. The electrocardiogram lead electrode for the animal experiment is characterized in that an insulation limiting sleeve is arranged on the rear portion of the electrode needle and is of a hollow reverse cone, the electrode needle is sleeved with the insulation limiting sleeve, the insulation limiting sleeve is made of plastic or ceramic, the length of the insulation limiting sleeve is a half that of the electrode needle, the electrode needle is made of silver or metal with small electrical resistivity so that signal attenuation and interference can be reduced in the conduction process.