我国高等级公路建设由原来以政府作为单一的投资主体发展到现在的贷款、集资、发行债券、转让公路经营权、ＢＯＴ、上市等多种融资渠道。由于我国的资本市场尚处于发育时期，供需双方不能完全自己选择，这些融资渠道很大程度受国家政策、法规及规定的约束，所以，按照最佳资本 China’s high-grade highway construction from the government as a single investor to the development of the current loans, fund-raising, bond issuance, transfer of road management rights, BOT, listing and other financing channels. As China’s capital market is still in its development period, both supply and demand sides can not fully choose their own, these financing channels are largely subject to national policies, rules and regulations, so, according to the optimal capital