Purpose　-　The　purpose　of　this　paper　is　to　propose　the　pressure　fluctuation　to　further　evaluate　and　predict　the　dynamic　and　static　characteristics　of　the　aerostatic　slider　and　improve　the　calculation　accuracy　of　the　aerostatic　slider.　Design/methodology/approach　-　First-order　velocity　slip　is　introduced　into　the　traditional　gas-film　fluid　equation,　and　the　numerical　analysis　method　is　used　to　solve　the　static　performance　of　the　aerostatic　slider.　The　finite　element　analysis　method　is　used　to　solve　its　dynamic　characteristics.　Findings　-　It　can　be　concluded　from　the　simulation　and　experimental　results　that　the　model　considering　the　velocity　slip　in　the　gas　film　flow　is　more　accurate.　The　errors　between　the　modal　detection　results　and　the　vibration　detection　results　(0.8%-5.8%)　under　speed　slip　are　smaller　than　the　traditional　cases　(23.7%-210%),　which　also　verifies　the　correctness　of　the　above　conclusions.　Originality/value　-　In　this　paper,　the　method　of　simulation　and　experiment　is　used　to　prove　that　the　first-order　velocity　slip　model　is　more　suitable　to　predict　the　dynamic　response　of　the　aerostatic　slider　than　the　condition　without　slip.　Peer　review　-　The　peer　review　history　for　this　article　is　available　at:　https://publons.com/publon/10.1108/ILT-02-2020-0059/