Abstract: Palmae is a pan-tropical family comprising 198 genera and 2 670 species around the world,98 genera and 120 species in China and 10 genera and 60~70 species in Yunnan Province.The landscaping function and constitutional characteristics of palm plants were discussed based on analyzing their biological properties and horticultural-aesthetical characters.It was advocated that much attention should be paid to the natural crown form,intrinsic quality and particularity of each species for landscaping utilization of palm plants.The beauty of sturdiness and rhyme scheme of the palm plants might be well realized only when their ornamental characteristics are fully exhibited through appropriate contrasting the elegance of pinnate,palmate leaves by rational planting designs such as individual planting,group planting,scattered planting and mixed planting with other tree species in urban greening,and adequate tending should be applied meanwhile.