The　dynamic　explicit　finite　element　program　LS-DYNA　was　used　to　simulate　the　nuclear　power　plant　shock　and　impact　crashed　by　the　aircraft.　Through　the　simulation　of　reinforced　concrete　slabs　hit　by　the　engine,　constitutive　models　used　in　the　simulation　were　verified.　The　grid　size　effect　of　the　finite　element　model　was　studied.　Using　the　result　of　the　simulation,　characteristics　of　impacting　load　were　analyzed.