Abstract: On the basis of the theory of sound scattering of plane wave on elastic spherical shell,the calculation model of influences of near-field sound scattering by elastic spherical shell on direction finding of the vector hydrophone is established.The influences by the incident wave frequency,the incident angle and the installation position of the vector hydrophone are also analyzed.The results of calculation and theoretical analysis show that the influences,which can be eliminated and decreased by choosing proper working frequency and taking acoustic methods,have close relations with sound scattering characteristics of the shell and the installation position of the hydrophone.The research results lay the theoretical foundation for practical engineering application of the vector hydrophone.