  We study the energy distribution of $\phi$ in pure penguin induced
$B\rightarrow X_s \phi$ taking into account the fermi motion of b inside $B$
meson for $b\rightarrow s\phi$ and also modification due to gluon
bremsstrahlung process $b\rightarrow s\phi g$. We find that the contribution to
$B\rightarrow X_s\phi$ from $b\rightarrow s\phi g$ is less than 3\%. This study
provides a criterion for including most of the $\phi$'s produced in a penguin
process.
