The invention is suitable for the communication and electron field, and provides a portable detecting device with two electrodes, the portable detecting device comprises: a main body of the portable detecting device and a wrist strap, wherein the main body of the portable detecting device comprises: a front and a back, wherein the front comprises a first lead electrode detecting a finger signal and the back comprises a second lead electrode detecting a wrist signal. The technical solution provided by the present invention has the advantage of convenient for users to carry and easy for users obtaining the data thereof.
