A new type of easyconstructed soft waterproofing layer with high performance is necessary due to the high requirement of design of Metro waterproofing and environment and new material. The performance and construction technologies of existing waterproofing coiled materials are analyzed. The HEPE selfadhesive membrane waterproofing coiled material can meet the requirement of Metro waterproofing structure. The application effects are as follows: 1) A suit of construction of HDPE waterproofing coiled material is established. 2) Quality guaranteed technologies are provided. 3) The construction efficiency and quality is improved, and the construction scheme is guaranteed.