Five walkway landscaping structures and three typical weathers in Chengdu city proper are selected to measure meteorological factors such as luminance, temperature, humidity, wind speed, etc. and at the same time to make comparative observation at adjacent open cement pavement. By comparing shading rate, temperature dropping rate and humectation effects under different weather conditions, a comprehensive evaluation is made by means of principle of fuzzy relation: the small climate effect with privet plus holly is the optimum, successively gingko plus privet plus lawn, camphor trees plus holly, lawn, French parasol trees. Among which the lawn is of the best humectation effect for 0.10?m.