Research　on　height-variable　chassis　and　new-style　suspension,　the　designation　on　new-style　suspension　used　to　implement　changes　in　chassis　height;　it　is　a　greater　magnetic　force　by　electromagnetic　theory,　to　achieve　the　lifting　link　height　changes.　In　order　to　determine　the　feasibility　of　variable　height　suspension,　simulate　on　the　new　suspension　at　three　different　suspension　heights.　With　the　suspension　height　variation,　effect　on　suspension　alignment　parameters　and　roll　coefficients　and　get　Variation.　Actual　driving　in　the　car,　the　suspension　does　not　exist　in　the　rigid　body,　so　by　elevating　connecting　rod　flexible　body　analysis,　systems　analysis　to　improve　accuracy.　At　last,　compared　with　the　alignment　parameters　and　roll　coefficients　on　rigid　body,　obtain　the　Necessity　of　flexible　analyzes.　©　2016,　FISITA.　All　rights　reserved.