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There is an increased awareness an environmental aspects in civil engineering works that has been undertaken over the past decade. An increasing awareness and obligation for Engineers is to create ‘green’ slopes for the steep hillsides of Hong Kong far its infrastructure development works. There are two aspects to the approach in providing long-term ‘green’ slopes. Firstly, the desired technique should be universally applicable. That is, the technique can be used on various slope geometries, various slope materials that can range from soil cuttings to relatively steep rock slopes. The second aspect is the maintenance of the slopes where the condition provided and the vegetation type selected can ensure longevity of growth and the establishment of equilibrium where ecology can once again be sustained in a mutually balanced habitat. A technique named ‘Geofibre Technology’ which utilized the continuous fiber sail reinforcement technology has been used successfully In Japan for 10 years on Slope technology. Geofiber has now over 60% of the market share of the greening technology market in Japan and is officially approved by Japanese Government. Since its Invention in the early 1990s, the technique has been researched and developed for applications in quarry faces, shoreline protection, highway slopes, reservoir slopes, dam faces etc. Its application in slope technology with an essence In the conservation of environment is now made with respect to the Hang Kong situation. This paper describes the principles of Geofiber Technology, its application to hillside slopes two recent job sites in Hong Kong at Stubbs Road and Tsing Yi North Coastal Road and outlines the current research carried out in Hong Kong and the future development anticipated in Hong Kong.