  The second-order post-Newtonian solution for the light propagation in the
field of Kerr-Newman black hole is achieved via an iterative method. Based on
this result, we further obtain the second-order post-Newtonian light deflection
in Kerr-Newman spacetime, which is formulated in an united form for any
arbitrarily incident directions. All results are exhibited in the coordinate
system constituted by the initial light-direction vector, the impact vector,
and their cross-product.
