  Quantization of different regions of the Reissner-Nordstr\"{o}m space time
(charged black hole) is done in the framework of loop quantum gravity. The
geometry of Reissner-Nordstr\"{o}m space-time is expressed in terms of Ashtekar
variables which form the classical phase space of such a black hole. Using the
loop quantization of phase space, the issue of singularity avoidance of such a
black hole is addressed; based on spherically symmetry reduced models of loop
quantum gravity, the operator analogue of the diverging factor of scalar
curvature of the charged black hole is constructed and is shown to exhibit an
upper bounded spectrum. This local criterion, together with the global one
(non-singular quantum evolution equation) proves the avoidance of charged black
hole singularity in symmetry reduced models of loop quantum gravity.
