  A phenomenological analysis of $K\to \pi\pi\gamma$ ($K_L\to\pi^+\pi^-\gamma$
and $K^+\to\pi^+\pi^0\gamma$) with the direct emission photon is carried out
beyond the leading order in the chiral perturbation theory. We show that the
experimental evidence for the large photon energy dependence of the magnetic
amplitude in $K_L\to\pi^+\pi^-\gamma$ seems to indicate an interesting
consequence: vector meson dominance must be implemented at $O(p^4)$, which is
not a general feature of the chiral perturbation theory. The phenomenology of
$K^+\to\pi^+\pi^0\gamma$ is also analyzed using the same scheme.
