An ultrasonic transducer comprising: an acoustic matching layer including at least a layer made up of a hard material; a piezoelectric member which comprises two opposite plane portions and which is provided with electrodes (5a, 5b) on the two opposite plane portions, wherein the piezoelectric member is fixed to a face of the layer made up of a hard material and disposed such that part of the acoustic matching layer protrudes at a predetermined position of the layer made up of a hard material which makes up the acoustic matching layer; a backing member which is formed on the plane portion of the piezoelectric member that is opposite to the layer made up of a hard material; a substrate of which at least one face side is formed with an electroconductive pattern and which is fixed and disposed on the face of the layer made up of a hard material; and a shape-formative member (4a, 4c, 4e), which is disposed such as to be adjacent to one end side of the backing member and the piezoelectric device in an inner direction with respect to the acoustic matching layer, corresponding to the face of the layer made up of a hard material to which the piezoelectric member is fixed; wherein the substrate is disposed on the other end side of the piezoelectric device; wherein, with such a disposed state, the piezoelectric member is divided into a plurality of piezoelectric devices, the substrate is divided into substrates on which a predetermined electroconductive pattern is disposed to array the plurality of piezoelectric devices; wherein the electroconductive pattern of the substrate, and at least part of the electrodes of the piezoelectric member, which is electrically connected to at least part of this electroconductive pattern, are directed in the same direction, this substrate is disposed adjacent to the piezoelectric member, and wherein the electroconductive pattern on the divided substrate and the divided electrodes (5a, 5b) of the piezoelectric member are electrically connected via an electroconductive member respectively. an acoustic matching layer including at least a layer made up of a hard material; a piezoelectric member which comprises two opposite plane portions and which is provided with electrodes (5a, 5b) on the two opposite plane portions, wherein the piezoelectric member is fixed to a face of the layer made up of a hard material and disposed such that part of the acoustic matching layer protrudes at a predetermined position of the layer made up of a hard material which makes up the acoustic matching layer; a backing member which is formed on the plane portion of the piezoelectric member that is opposite to the layer made up of a hard material; a substrate of which at least one face side is formed with an electroconductive pattern and which is fixed and disposed on the face of the layer made up of a hard material; and a shape-formative member (4a, 4c, 4e), which is disposed such as to be adjacent to one end side of the backing member and the piezoelectric device in an inner direction with respect to the acoustic matching layer, corresponding to the face of the layer made up of a hard material to which the piezoelectric member is fixed; wherein the substrate is disposed on the other end side of the piezoelectric device; wherein, with such a disposed state, the piezoelectric member is divided into a plurality of piezoelectric devices, the substrate is divided into substrates on which a predetermined electroconductive pattern is disposed to array the plurality of piezoelectric devices; wherein the electroconductive pattern of the substrate, and at least part of the electrodes of the piezoelectric member, which is electrically connected to at least part of this electroconductive pattern, are directed in the same direction, this substrate is disposed adjacent to the piezoelectric member, and wherein the electroconductive pattern on the divided substrate and the divided electrodes (5a, 5b) of the piezoelectric member are electrically connected via an electroconductive member respectively.