By　introducing　multi-leaf　sectorial　holes　into　an　oxidation　confined　850nm　vertical　cavity　surface　emitting　laser　(VCSEL),　the　far-field　divergence　angle　is　reduced.　The　finite-difference　time-domain　method　is　used　to　simulate　the　far-field　pattern　of　the　multi-leaf　holey　VCSEL　with　different　etching　depths　and　different　shapes　of　the　oxide　aperture　in　diameter　R.　Based　on　the　simulation　result,　we　design　and　fabricate　a　multi-leaf　holey　VCSEL　and　its　divergence　angle　is　only　6　degrees.　The　experimental　results　agree　well　with　the　theoretical　predication.