  We study the lensing effects of Kerr-Newman (KN) black holes and the
multi-level images of luminous sources around the black holes. We obtain the
analytic forms of the lens equations in KN spacetime and derive approximately
their limiting forms for photon emissions near the bounded photon orbits. After
deriving the expressions of three key parameters $\gamma$, $\delta$ and $\tau$,
we investigate the primary, the secondary and the higher-order images of
spherical sources and equatorial disk-like sources. In particular, we find that
the charge of KN black hole has a significant effect on the higher-order
images.
