Investment is the basic driving force of economic growth，also is the necessary prerequisite for economic growth.For a long time，China's economy has been driven mainly by investment.Although there are many problems in this growth mode of over-reliance on investment，China，as a large developing country，must maintain a certain rate of economic growth.The key to stable investment is to stabilize infrastructure，and use the rebound of infrastructure investment to offset the decline of export and real estate investment growth.It is expected that investment in fixed assets will rebound further in 2019.The growth rate of investment in infrastructure will probably rebound further，and the growth rate of investment in infrastructure will probably reach 8%.In the critical period of our country's economic development from high-speed growth to high-quality development，we must correctly handle the relationship between stable investment and transfer mode，deleveraging，real estate regulation and control，government investment and private investment.We must not make mass investment and duplicate construction.In 2019，investors are advised to focus on traditional infrastructure repair board，new infrastructure construction and related industries.