In order to solve the problem of pressure resistance of great depth hydrophones, the theoretical calculation of the strength and stability failure of the airbacked piezoelectric tube and piezoelectric spherical shell transducer were carried out, and the static structural simulation and eigenvalue buckling simulation were also carried out with FE simulation software. It can be seen from the calculation and simulation results that the airbacked piezoelectric tube and spherical shell have considerable pressure resistance and can be used as pressureresistant hydrophones with working depth of 3 km or even deeper. A piezoelectric spherical shell with a diameter of 30 mm and a thickness of 3 mm is fabricated and tested, which can withstand the pressure of 30 MPa. Finally, the influence of high pressure on sensitivity of piezoelectric tube and spherical shell transducer was studied with FE simulation. The simulation results show that high pressure leads to the sensitivity loss, and the higher pressure, the faster the sensitivity loss.