A portable electrocardiograph includes a sensing unit and an process platform. The sensing unit having a signal wire is arranged to a patient for sensing the cycle of heart beat. The process platform having an application program serves to process and analyze the cycle of heart beat sensed by the sensing unit, the process result wil' be recorded and displayed. The process result will be transmitted through wire, wireless, Bluetooth transmission so that the initial symptom can be delivered to medical personnel. The process result can also be transmitted to data base of hospital server through network for advanced analysis so as to perform further diagnostic and treatment. The portable electrocardiograph is easily carried by patients so as to apply a self-diagnostic in time and inform medical personnel the latest condition for a complete diagnostic.
