Abstract: With the fast development of the economy and society in China, a better and convenient transportation is needed, especially that freeway and tour highway should be build more and more. The complex transportation system not only needs a integrate harmony of good 3-D spatial shape and lognitudinal, horizontal & cross sections, but requires a good harmony of road sight and natrual view, human sight. The opinion and outline for the couple of highway sight and environment was introduced and discussed in this paper. It is suggested that highway construction should optimize the function and sight, and the environment should be protected.