Thinking on the greening design of highway

With the improvement of the national economy and living standard,the highway especially high grade ways construction has a unprecedented development as the infrastructure in recent years.Greening has being paid a great attention day by day as an important component of highway construction.The author puts forward the prominent problem on the current highway greening design according his experiences,such as the different regard on greening,ignoring the greening of spoil area,too much artificial landscaping,the lag of greening construction, improper floristics and wrong allocation.He also formulates the principle,task and suggestion about highway greening design which can be drawing lessons from.