  We study the effect of scalar-isoscalar $f_{0}(980)$ meson in the mechanism
of the radiative $\phi\to \pi^{+}\pi^{-}\gamma$ decay. A phenomenological
approach is used to study this decay by considering the contributions of
$\sigma$-meson, $\rho$-meson and $f_{0}(980)$-meson. The interference effects
between different contributions are analyzed and the branching ratio for this
decay is calculated. We observe that $f_0$ meson contribution is much larger
than the contributions of the other terms.
