Under the concept of environmental protection and sustainable development,wood-plastic composite materials have been widely used in the field of modern garden and housing construction due to their extensive sources,economic and environmental protection,excellent performance and other characteristics.Based on this,the basic characteristics of wood-plastic composite materials are expounded,and the applicability of such materials in environmental protection garden is analyzed.The recycling of waste paper resources has received more and more attention,and composite materials using waste paper as raw materials have been gradually developed and prepared.The preparation technology and comprehensive properties of waste paper/PETG WPC composites were studied.And explore the application principles and forms of waste paper/PETG WPC in environmentally friendly gardens,in order to improve the utilization rate of waste paper,develop green and environmentally friendly WPC,and promote the innovative development of environmentally friendly gardens.