Based on Richards and Wolf vectorial diffraction integral,three-dimensional light field complex amplitude function is presented when circularly polarization vortex Bessel-Gaussian beam passes through a high numerical-aperture system with primary coma aberration. The highly-focusing fields with different comatic aberration coefficients are presented. The results show that the presence of primary coma aberration makes the pattern and position of light distribution change. The pattern of light distribution does not depend on sign of comatic aberration coefficient. As for intensity distribution along the optical axis,primary coma aberration does not change its symmetry,but affects its form.