This paper puts forward the basic principles of road greening techniques with analysis on the requirements of its greening design and major issues to be discussed regarding roads of different class and sections.A further illustration explores the content and methods in establishing related documentation, manifesting that greening design for roads of different class and sections should adopt different types of arbor, bush or flowers and trees to meet the aim at maximizing roadbed stability,road appearance,flare prohibition, view guidance,noise and dust control...