  The structure and electroweak properties of the pion in symmetric nuclear
matter are presented in the framework of the Nambu--Jona-Lasinio model. The
pion is described as a bound state of a dressed quark-antiquark pair governed
by the Bethe-Salpeter equation. For the in-medium current-light-quark
properties we use the quark-meson coupling model, which describes successfully
the properties of hadron in a nuclear medium. We found that the light-quark
condensates, the pion decay constant and pion-quark coupling constant decrease
with increasing nuclear matter density. We then predict the modifications of
the charge radius of the charged pion in nuclear matter.
