PPP (Public-Private Partnership)模式是政府和社会资本形成的一种长期合作伙伴关系，最终为实现效率最大化和公共利益最大化，PPP的核心要素是长期合作关系、利益共享、风险共担等。自2014年底国务院在基础设施和公共服务领域推行PPP模式以来，基础设施投融资模式发生了重大变化，PPP模式已经被提升至国家发展的战略高度，也是未来基础设施和公共服务领域投融资的主要方式。在基建行业中引入PPP模式，提升了项目的建设和运营效率，有效弥补了政府在财政资金方面存在的缺口。但是社会资本在参与PPP项目的建设中将面临诸多风险，如何才能有效的规避社会资本参与PPP项目的风险已经成为需要高度关注的问题。本文将就基建行业PPP业务模式及存在的问题进行探讨，从而为基建行业PPP项目的风险管理提供一定借鉴。 PPP model is a long-term partnership formed by the government and social capital, which is de-signed to ultimately maximize efficiency and public interests. The core elements of PPP are long-term cooperation relationship, benefit sharing, risk-sharing, etc. Since the State Council promoted the PPP model in the field of infrastructure and public services at the end of 2014, great changes have taken place in infrastructure investment and financing model. The PPP model has been promoted to the strategic level of national development, and it is also considered as the main way of investment and financing in the future infrastructure and public services. The introduction of the PPP model in the infrastructure industry has improved the efficiency of project construction and operation, and has effectively made up for the government’s financial funding gap. However, social capital will face many risks in participating in the construction of PPP projects. It has become an issue that requires great attention in terms of how to effectively avoid the risks of social capital participation in PPP projects. This article will discuss the PPP model in the infrastructure industry as well as the existing problems, so as to provide certain reference for the risk management of PPP projects in the infrastructure industry.