  We study the radiative decay $\phi\to\pi^{0}\eta\gamma$ within the framework
of a phenomenological approach in which the contributions of $\rho$-meson,
chiral loop and $a_0$-meson are considered. We analyze the interference effects
between different contributions and utilizing the experimental branching ratio
and invariant $\pi^0\eta$ mass spectrum for $\phi\to\pi^{0}\eta\gamma$ decay we
estimate the branching ratio of $\phi\to a_0\gamma$ decay.
