There is disclosed a polymeric piezoelectric ultrasonic probe using a polymeric piezoelectric member which comprises a polymeric piezoelectric member; a common electrode formed on one surface of the polymeric piezoelectric member; and electrodes for driving provided as opposed to the common electrode with the polymeric piezoelectric member being interposed therebetween, the electrodes for driving being formed on a polymeric thin film.The polymeric piezoelectric ultrasonic probe of the present invention has advantages that not only breaking or short circuit of electrodes shaped in rectangular strips can be prevented, but also it becomes possible to connect lead wires with good reliability. Besides, not only cumbersomeness is registration of electrodes shaped in rectangular strips during lamination of polymeric piezoelectric members can be cancelled, but also acoustic-electrical coupling or cross-talk can be reduced.