Lead standard interface and universal lead wire for electrocardiosignal collection

A lead standard interface comprises a digital port and an analog port. The lead standard interface is characterized in that the analog port comprises 16 analog input ends and 16 analog output ends; the analog input ends are compatible with 16 leads singly led to 18 leads. The analog input ends of the analog port are connected with a plurality of led electrodes through lead wires so as to, when acquiring analog electrocardiosignals, automatically shut off suspended idle ones of the analog input ends and not to acquire the analog electrocardiosignals from the idle ports. The digital port comprises a plurality of digital input ends and a plurality of digital output ends. The digital port is electrically connected with the lead wires different in lead number and used for acquiring digital signals in the lead wires. The utility further provides a lead wire used with the lead standard port.