Underwater sound transmitter used for underwater sound transmission

The invention relate to an underwater sound transmitter used for underwater sound transmission, which is driven by a magnetostrictive material and utilizes an elastic wave sound-producing surface as a main transmission mode. The underwater sound transmitter comprises the elastic wave sound-producing surface and a driving main body, wherein the elastic wave sound-producing surface is made of metal materials and comprises a main interface and a wavy elastic wave at the periphery of the main interface; the driving main body is a sealing body which is provided with a waterproof port connected to an external audio input device, a magnetostrictive body is installed in the driving main body and provided with a coil; and the elastic wave sound-producing surface is fixed on the upper end face of the driving main body through a waterproof device. The underwater sound transmitter used for underwater sound transmission effectively solves the problems that people hardly listen to music underwater for a long period of time