With　the　increase　of　population　of　city　and　the　increase　of　industrialization　and　town　level,　the　demand　of　non-farmland　is　larger.　The　conflict　of　man　and　land　increasingly　extrude.　However,　the　requirement　quantity　of　construction　blindly　increased　will　add　the　fatalness　of　the　city.　The　author　takes　advantage　of　the　technique　of　Geographic　Information　System　to　analyze　the　influence　of　crack　degree　of　earthquake　on　the　structure　of　land-use,　and　optimize　the　quantity　structure　of　land-Use　and　space　structure　of　land-use,　and　then　realize　the　rational　and　Secure　planning　of　land　resource.