国债是中央政府为筹集资金，以国家信用方式发行的一种安全性好、收益合理、流动性强的标准化债券。国债市场是政府融资的主要场所，它在金融市场中发挥着主导性和传导性作用。发展和完善国债市场，有利于扩大政府的融资活动，有利于建立适应市场经济体制的间接宏观调控机... National debt is a standardized, well-secured, well-rewarded and liquid standardized bond issued by the central government for raising funds and issuing by means of state credit. Government bond market is the main place for government financing, which plays a leading and conductive role in the financial market. To develop and improve the national debt market is conducive to expanding the government’s financing activities and is conducive to establishing an indirect macro-control machine that can adapt to the market economy system.