This report explains the connotation of PPP projects for major engineering construction，and summarises the application of PPP in new infrastructure and new urbanization initiatives and major projects. Combined with the 14th Five-Year Plan，the report interprets the latest policies and development trends in the fields of transportation，municipal engineering and water conservancy construction，and uses the National Speed Skating Oval，Hangzhou-Taizhou High-speed Railway，and Bishan-Tongliang Suburban Railway（PPP+TOD project）as case studies to illustrate the financing structure and demonstration role of the major projects. Our research concludes that：the application of PPP model in major engineering construction has achieved remarkable theoretical and practical outcomes；the whole life cycle construction and operation of major PPP projects includes the feasibility and suitability demonstration and scheme comparison of the PPP model，the selection of social capital parties，the whole life cycle risk identification and sharing framework，safety emergency and supervision performance management，mid-term evaluation and renegotiation，project Key and difficult issues such as handover and post-evaluation；Strengthen the philosophy of “centennial plan” and “whole life cycle” of PPP projects，undertake advance planning，pool resources and reserve long-term development conditions in major engineering construction fields such as transportation and water conservancy construction，and study and practice the integrated development of “PPP+XOD”.