In　order　to　analyze　the　perennial　equilibrium　and　dynamic　relationship　on　transport　infrastructure　investment　and　economic　growth　deeply,　from　the　perspective　of　multi-factors　symbiosis　theory,　this　paper　selects　the　annual　data　from　1978-2009,　and　uses　Cointegration　and　Granger　causal　relationship.　The　results　show　that　there　is　a　long　stable　equilibrium　relationship　between　transport　infrastructure　investment　and　economic　growth.　But　Because　of　the　interference　of　other　economic　factors,　the　elasticity　of　transport　infrastructure　investment　is　lower　(0.1902).　From　Granger　causality　test,　we　can　know　that　from1978-2009　year,　economic　growth　always　is　Granger　cause　relationship　of　developing　transport　infrastructure.　This　relationship　appears　unidirectional　between　them.　©　2011　IEEE.