  We present the analytical post-Newtonian solutions for the test particle's
motion in the Reissner-Nordstr\"{o}m spacetime. The solutions are formulated in
the Wagoner-Will representation, the Epstein-Haugan representation, the
Brumberg representation, and the Damour-Deruelle representation, respectively.
The relations between the (post-)Keplerian parameters in different
representations, as well as their relations to the orbital energy and angular
momentum are also provided.
