The forward scattering of nonspherical aerosols leads to errors in the extinction coefficient measured by the solar radiometer, the error needs to be corrected theoretically. The forward scattering characteristics of ellipsoidal, cylindrical and Chebyshev particles and their effects on the forward scattering correction factor are studied by T-matrix method. The results show that the forward scattering intensity of ellipsoidal particles increases with the increase of equivalent radius and axial ratio. In dust aerosol particles, the correction factor will oscillate and decrease with the increase of particle size parameters. When the size parameters exceed 10, the forward scattering correction factor will be lower than 0.98. With the increase of the parameters, the correction factor will reach about 0.96. Ellipsoidal particles with different axial ratios and cylindrical particles with different length diameter ratios have great influence on the correction factor, while the deformation parameters and ripple parameters of Chebyshev particles have no obvious influence on the correction factor. These results provide theoretical guidance for studying forward scattering of atmospheric aerosol particles and the application of solar radiometer.