PET foam board is a kind of recyclable high-strength foamed plastic products with excellent performance.This material has a broad application prospect in the construction field,which is conducive to the recycling of building materials,reducing environmental pollution and saving social resources.But currently,its application in the field of architecture is relatively limited.Based on the physical and mechanical properties of PET foam board and relevant tests,this paper analyzes its application forms in the construction field,summarizes the standardization status of each application form,and prospects its application prospects in the construction field.