  We investigate the relationship between superselection rules and quantum
error correcting codes. We demonstrate that the existence of a superselection
rule implies the Knill-Laflamme condition in quantum error correction. As an
example, we examine quantum chromodynamics through the lens of quantum error
correction, where the proton and neutron states in the model are explored as
different superselection sectors that protect logical information. Finally we
comment on topological quantum error correcting codes and supersymmetric
quantum field theory within this framework.
