  We considered the systematics of $\alpha$-decay (AD) half-life (HL) of
super-heavy nuclei versus the decay energy and the total $\alpha$-kinetic
energy. We calculated the HL using the experimental Q_{$\alpha$} values. The
computed half-lives are compared with the experimental data and also with the
existing empirical estimates and are found in good agreement. Also, we obtained
$\alpha$-preformation factors from the ratio between theoretical and
experimental results for some super heavy nuclei SHN and evaluated the standard
deviation. The results indicate the acceptability of the approach.
