A light intensity expression of the partially coherent beam with spherical aberration propagating in the oceanic turbulence is obtained by the extended Huygens-Fresnel diffraction integral formula. Light intensity characteristics of the partially coherent beams with spherical aberration propagating in the seawater are investigated by means of numerical calculation. Results show that the larger the mean square temperature dissipation rate χT is, the smaller the dissipation rate of turbulence kinetic energy of unit mass liquid ε is, or the larger the relative intensity of temperature and salinity fluctuations w is, the more obvious the effect of oceanic turbulence on the expansion of the beam is. The smaller the χT is, the larger the ε is, or the smaller the w is, the smaller impact of oceanic turbulence on the beam expansion is. At the same time, the smaller the coherence length of the beam is, or the greater the spherical aberration is, the more the beam spread is. However, the influences of the spherical aberration parameters on the diffusion of the laser are significantly weaker than that of the oceanic parameters when the beam propagates in the seawater.